Soft & Chewy Sourdough Discard Oatmeal Chocolate Chip Cookies: The Ultimate No-Waste Recipe
If you’re searching for an extraordinary cookie experience, these soft sourdough oatmeal chocolate chip cookies are the answer. They are perfectly chewy, packed with delightful chocolate chips, and offer a subtle tang that elevates them beyond your average oatmeal cookie. This recipe is designed for immediate baking, meaning you don’t have to wait around for the dough to chill, making it ideal for those sudden cookie cravings!
Utilizing sourdough discard is not only a fantastic way to prevent waste but also imparts a unique depth of flavor and incredible texture to baked goods. These cookies have quickly become one of my absolute favorite discard dessert recipes, rivaling even my beloved Sourdough Discard Brownies. Just like those brownies, these cookies are wonderfully easy to make and freeze, ensuring you always have a delicious treat on hand.

The beauty of this sourdough discard cookie recipe lies in its simplicity and the incredible results it yields. Instead of tossing out your unfed starter, transform it into these incredibly delicious and satisfying cookies. It’s a truly rewarding way to bake and embrace the sustainable side of sourdough.
I frequently bake other delightful recipes using sourdough discard, such as Banana Sourdough Muffins and Sourdough Discard Banana Bread. Much like those recipes, these oatmeal cookies are perfect for making ahead and freezing, offering convenience without compromising on homemade goodness. Whether you’re a seasoned sourdough baker or new to the discard game, this recipe is a must-try for its ease, flavor, and incredible texture.
Beyond being incredibly tasty, using sourdough discard in your baking introduces a subtle complexity to the flavor profile. The slight tang from the sourdough perfectly complements the sweetness of the chocolate chips and the heartiness of the oats, creating a harmonious balance that will have everyone reaching for a second cookie. This recipe is a testament to how versatile and rewarding sourdough baking can be.
[feast_advanced_jump_to]
⭐️ What To Expect From These Sourdough Oatmeal Cookies
- Taste: Prepare for a symphony of textures and flavors. These cookies are wonderfully soft and tender on the inside, with a satisfyingly chewy center. The edges boast a delicate crunch from the oats, providing a delightful contrast. The sweetness of the chocolate chips is perfectly balanced by the earthy notes of the oats and a very subtle, pleasant tang from the sourdough discard, making each bite incredibly rich and complex.
- Ease: This recipe is surprisingly beginner-friendly, making it accessible even if you’re new to baking with sourdough. While an electric mixer or stand mixer with a paddle attachment is recommended to effectively cream together the butter and sugars, the steps are straightforward and easy to follow. We’ve broken down each part of the process to ensure success, even for novice bakers.
- Time: From start to finish, these cookies come together remarkably fast. You’ll only need about 10 minutes to mix up the delicious cookie dough. Each batch then bakes in roughly 10-11 minutes, meaning you can have fresh, warm cookies ready to enjoy in under half an hour. It’s the perfect quick dessert for unexpected guests or a spontaneous treat!
🛒 Key Ingredients for Perfect Sourdough Oatmeal Cookies

- Unfed Sourdough Discard: This is the star ingredient for adding that unique depth and moisture without the need for active leavening. I typically use cold, unfed sourdough starter straight from my fridge, which is perfect for this application. However, if you only have active, fed room-temperature starter, that works beautifully too! The key is to weigh it for accuracy, as active starter can be bubbly and therefore less dense. The discard contributes a subtle, pleasant tang that truly enhances the cookie’s flavor profile.
- Salted Butter: For all my cookie recipes, I swear by salted butter. The hint of salt truly amplifies and balances the sweetness, creating a more complex and satisfying flavor. Ensure your butter is properly softened to room temperature before you start. This is crucial for creaming it effectively with the sugars, creating an airy base for your dough. If you’re short on time, a quick zap in the microwave (on low power, carefully!) can help soften it without melting.
- Regular Old Fashioned Oats: The choice of oats matters significantly for texture. Old-fashioned oats provide that classic chewy, hearty texture we all love in an oatmeal cookie. They absorb liquid more slowly than instant oats, preventing the dough from becoming stiff and dry. Avoid quick or instant oats, as they can soak up too much moisture too quickly, resulting in a tougher cookie that doesn’t spread properly.
- Baking Soda: Essential for leavening, baking soda reacts with the acidic sourdough discard and other ingredients to help the cookies spread out beautifully and achieve that desirable slightly puffy, yet flat, shape. It also contributes to the tender crumb.
- Salt: Beyond the salted butter, a little extra salt in the dough is a non-negotiable for me. It’s a flavor enhancer that prevents the cookies from tasting overly sweet and brings out the best in the chocolate and oats.
- Eggs: Eggs serve multiple vital functions in this recipe. They act as a binder, holding all the ingredients together, and contribute significantly to the soft, chewy texture. They also add richness and moisture, making the cookies truly decadent.
- Brown Sugar & White Granulated Sugar: The combination of both sugars is key to achieving the perfect balance of flavor and texture. Brown sugar adds moisture and a lovely caramel note, contributing to the chewiness. White granulated sugar helps with crisp edges and overall sweetness.
- All-Purpose Flour: The structural backbone of our cookies. We’ll add it gradually to ensure the right consistency.
- Vanilla Extract: A splash of vanilla enhances all the other flavors, adding warmth and a classic bakery aroma.
✏️ Delicious Substitutions & Variations
While these sourdough oatmeal chocolate chip cookies are perfect as is, they also serve as a fantastic canvas for your creativity. Feel free to experiment with these delicious variations:
- Chocolate Chips: Don’t feel limited to classic semi-sweet chocolate chips. Elevate your cookies with white chocolate chips, butterscotch chips for a nostalgic touch, rich dark chocolate chunks, or even a mix of different varieties. For an autumnal twist, try cinnamon chips! You could also experiment with dried fruits like raisins, cranberries, or chopped dried apricots for added chewiness and tartness.
- Nuts! Adding nuts introduces a wonderful crunch and depth of flavor. We adore adding 1 cup of chopped walnuts or pecans to the dough. But why stop there? Consider peanuts, macadamia nuts, or even toasted almonds for different textural and flavor experiences. Ensure they are roughly chopped to distribute evenly throughout the dough.
- Cinnamon & Spice: Transform these into a classic spiced oatmeal cookie. Add 1 teaspoon of ground cinnamon to the batter along with the eggs and vanilla. For a truly traditional cinnamon raisin sourdough cookie, fold in 1.5 cups of plump raisins. You could also experiment with a pinch of nutmeg or allspice for even more warmth.
- Coconut: For a tropical twist, add ½ to 1 cup of shredded coconut (sweetened or unsweetened) to the dough.
- Toffee Bits: Mix in a handful of toffee bits for a buttery, caramel-like crunch.
- Lemon Zest: A teaspoon of fresh lemon zest can brighten the flavor profile, offering a subtle citrusy aroma that complements the oats beautifully.
🧑🍳 Step-by-Step Instructions
Sourdough oatmeal chocolate chip cookies come together quite quickly, so it’s a good idea to have your oven preheated to 350℉ (175°C) and your baking sheets lined with parchment paper or silicone mats before you begin. This ensures a smooth and efficient baking process.
TOP TIP: Weighing your ingredients, especially flour and sourdough discard, will consistently give you the best results. If you have a kitchen scale, make sure to use it for accuracy!

Step 1. Cream Butter and Sugars: In a large mixing bowl, use an electric mixer (or a stand mixer fitted with a paddle attachment) to beat together the softened salted butter, brown sugar, and white granulated sugar. Cream them on medium-high speed for about 3 minutes, until the mixture becomes light, fluffy, and visibly paler in color. This creaming process incorporates air, which is essential for soft, tender cookies.

Step 2. Incorporate Wet Ingredients: Add the vanilla extract and the large egg to the creamed butter and sugar mixture. Mix thoroughly for another 1-2 minutes until everything is well combined and the mixture is smooth. Scrape down the sides of the bowl as needed to ensure all ingredients are incorporated.

Step 3. Add Sourdough Discard and Leavening: Next, add your sourdough discard (remember to weigh it for precision, especially if using active starter!), salt, and baking soda to the mixing bowl. Mix on low speed until these ingredients are just combined. It’s crucial for the sourdough discard to be on the thinner side, similar to a pancake batter consistency, not overly thick. A thicker discard can result in a stiffer cookie dough that won’t spread properly during baking. If your discard seems too thick, don’t hesitate to add a Tablespoon or two of water to achieve the right consistency.

Step 4. Mix in Flour: Gradually add the all-purpose flour to the wet ingredients. Start with 2.75 cups and add up to 3 cups if the dough seems too sticky. Mix on the lowest speed until the flour is *just* combined. Be careful not to overmix, as this can develop the gluten too much, leading to tough cookies. Stop mixing as soon as no dry streaks of flour remain.

Step 5. Fold in Oats and Chocolate Chips: Finally, add the old-fashioned oats and chocolate chips to the dough. Mix on low to medium speed until they are fully and evenly distributed throughout the dough. Again, avoid overmixing to maintain the cookies’ tender texture.

Step 6. Scoop and Bake: Using a 1.5 Tablespoon cookie scoop, portion the dough into uniform balls. Arrange them about 1.5 inches apart on your prepared baking sheet. You should be able to fit 12 or 13 cookies per pan by alternating rows of 3 and 2. Bake for 10-11 minutes, or until the edges are lightly golden, the cookies are puffy, and they have flattened slightly. The centers might still look a little soft, which is perfect for a chewy result. Remove from the oven and let them cool on the baking sheet for at least 10 minutes before transferring to a wire rack. This allows them to set and prevents them from breaking apart.

📌 Top Tips & Hacks for Best Results
- Weigh Your Ingredients for Consistency: This cannot be stressed enough! Using a kitchen scale to measure flour, oats, and especially sourdough discard ensures accuracy every single time, leading to perfectly consistent cookies. Volume measurements (cups) can vary greatly.
- Do NOT Overbake!: This is the secret to soft, chewy cookies. They are best when they look slightly underbaked in the center when you pull them from the oven. The residual heat from the baking sheet will continue to cook them as they cool. Overbaking will lead to crunchy, dry cookies instead of the desired soft and chewy texture.
- Utilize Silicone Baking Mats: For even baking, easy release, and incredibly quick cleanup, silicone baking mats are a game-changer. They also help prevent the bottoms from getting too dark.
- Strategic Scooping: When placing dough balls onto your baking sheet, arrange them in alternating rows of 3 and 2. This allows you to fit 13 cookies per pan instead of the usual 12, maximizing your baking efficiency.
- Room Temperature Ingredients are Key: Ensure your butter and egg are at room temperature. This allows them to cream together properly with the sugars, creating a smooth, emulsified dough that will bake evenly and yield a superior texture. Cold ingredients can result in a lumpy batter and a denser cookie.
- Don’t Be Afraid to Add Water to Discard: As mentioned in the instructions, if your sourdough discard is very thick (like peanut butter), thin it out with a tablespoon or two of water. This ensures proper cookie spread.
❓Frequently Asked Questions About Sourdough Oatmeal Cookies
If your cookie dough is stiff and the cookies aren’t spreading, you can add a Tablespoon or two of water to the dough and mix it in.
– Stiff dough can be caused by various factors: your sourdough discard might have different varieties of flour in it that absorb a lot of moisture, or you might have accidentally added too much flour or oats.
– To avoid this in the future, make sure to measure all your ingredients by weight using a kitchen scale to get consistent results every time.
For this versatile recipe, you have options! You can use either cold, unfed sourdough discard straight from your refrigerator or a room-temperature, active (fed) starter. Both will work equally well. The most important thing is to accurately weigh your starter. Active starter typically has more bubbles, which can affect its volume measurement, so weighing ensures you add the correct amount to the dough.
For the best chewy texture, regular old-fashioned rolled oats are highly recommended. Quick oats or instant oats absorb liquid much too quickly, which can lead to a dry, stiff dough and cookies that are less tender and don’t spread as desired. Stick with old-fashioned for optimal results.
Absolutely, these cookies freeze beautifully! You can freeze either the dough or the baked cookies.
To freeze the dough:
1. Prepare the recipe for the dough as directed.
2. Scoop the dough into balls and place them onto a cookie sheet lined with parchment paper. Keep them close together but ensure the edges are not touching.
3. Freeze for 4 hours or overnight until solid, then transfer the frozen dough balls to a freezer-safe bag or airtight container for longer storage.
To bake thawed dough: Simply transfer the desired number of frozen cookie dough balls to the refrigerator overnight to thaw. Then, place them onto a prepared cookie sheet. Preheat the oven to 350°F (175°C) and bake as directed in the recipe.
To bake from frozen: Preheat your oven to 350°F (175°C). Place the frozen cookie dough balls onto a cookie sheet lined with parchment paper or a baking mat. Bake for 12-14 minutes, or until the edges are barely golden brown and the tops are just beginning to show small cracks. After 12 minutes, check them every minute to prevent overbaking.
While this recipe is designed for immediate baking, you can refrigerate the dough for up to 2 days if you need to make it ahead of time. This can actually deepen the subtle sourdough flavor slightly. However, if you choose to chill the dough, I recommend bringing it back to room temperature before scooping and baking. This helps ensure the cookies flatten and spread properly as they bake, giving you that perfect chewy texture.
Once baked and completely cooled, these cookies can be stored in an airtight container at room temperature for up to 4 days. If you’ve baked a large batch or want to keep them fresh for longer, freeze the cooled cookies in a freezer-safe container or bag for up to 3 months. Thaw them at room temperature or gently warm them in the microwave for a fresh-baked experience.
🍪 More Delicious Cookie Recipes You’ll Love
- Strawberry Cheesecake Cookies
- White Chocolate Biscoff Cookies
- M&M Oatmeal Pudding Cookies
- Pistachio Pudding Cookies
Did you try this recipe? Make sure to leave a ⭐️ star rating and a comment below the recipe card. I absolutely love hearing from you, and your feedback is incredibly helpful to other readers!
📲 FOLLOW Sara on Social! 👋 Facebook, Instagram, or Pinterest to see the latest deliciousness from the kitchen!
📝 Printable Recipe Card

Sourdough Oatmeal Chocolate Chip Cookies
Pin Recipe
Ingredients
- 1 cup salted butter, softened 226g
- ¾ cup brown sugar 172g
- ¾ cup white granulated sugar 185g
- 2 teaspoons vanilla extract
- 1 large egg
- ½ cup unfed or active sourdough discard 130g
- 1½ teaspoons salt 10g
- 1½ teaspoons baking soda 7g
- 2¾ – 3 cups all purpose flour 375-400 g
- 2 cups old fashioned oats 200g
- 1½ cups chocolate chips
Instructions
-
Preheat oven to 350℉ (175°C). Line baking sheets with parchment paper or silicone mats. In a large mixing bowl, use an electric mixer (or stand mixer with paddle attachment) to beat softened butter, brown sugar, and white sugar until creamy and white, about 3 minutes on medium/high speed.
-
Add vanilla extract and the large egg to the mixing bowl and mix well, for another 1-2 minutes, scraping down the sides as needed.
-
Add in the sourdough discard, salt, and baking soda and mix until just combined on low speed.
Sourdough discard consistency should be on the thinner side like pancake batter, not very thick. Thicker discard makes stiffer cookie dough that won’t spread. Add a Tablespoon or two of water if needed!
-
Add the all-purpose flour (start with 2.75 cups and add more if needed) and mix on low speed until just combined. Do not overmix.
-
Add in old-fashioned oats and chocolate chips last, mixing on low/medium speed until they are fully mixed in and evenly distributed.
-
Scoop the dough into uniform balls onto a prepared baking sheet (aim for 12 or 13 per pan by alternating rows of 3 and 2) about 1.5 inches apart. I recommend using a 1.5 Tablespoon cookie scoop for even sizing.
-
Bake for 10-11 minutes, or until the cookies are puffy, slightly flattened, and the edges are lightly golden. The centers may still look a bit soft. Remove from the oven and cool on the baking sheet for at least 10 minutes before transferring to a wire rack to cool completely.
Notes
Store baked and cooled cookies at room temperature in an airtight container for up to 4 days.
This recipe yields approximately 40 delicious cookies.
TO FREEZE COOKIE DOUGH:
1. Prepare the cookie dough as directed in the recipe.
2. Scoop the dough into uniform balls onto a cookie sheet lined with parchment paper. Place them close together but ensure they are not touching.
3. Freeze for 4 hours or overnight until the dough balls are solid. Once frozen, transfer them to a freezer-safe bag or airtight container for long-term storage.
To bake thawed dough: Simply place the desired number of frozen cookie dough balls in the refrigerator overnight to thaw. Then, arrange them on a prepared cookie sheet. Preheat your oven to 350°F (175°C) and bake according to the recipe instructions.
To bake from frozen: Preheat oven to 350°F (175°C). Place the frozen cookie dough balls directly onto a cookie sheet lined with parchment paper or a baking mat. Bake for 12-14 minutes, or until the edges are barely golden brown and the tops begin to crack. After 12 minutes, check them every minute until they reach your desired doneness.