These Sourdough Chocolate Peanut Butter Swirl Cookies are a delightful treat! You get rich chocolate and creamy peanut butter in each bite. Yum!
Making these cookies feels like a fun baking adventure! The sourdough adds a unique twist that makes them extra special. I love sharing them fresh out of the oven with a big glass of milk.
Key Ingredients & Substitutions
Sourdough Starter Discard: This is essential for the tangy flavor in these cookies. If you don’t have any, you can replace it with an equal amount of applesauce or yogurt, though the taste will differ slightly.
Peanut Butter: Creamy peanut butter gives the best texture. If you need a nut-free version, try using sunflower seed butter or coconut butter for a different twist.
Granulated Sugar: White sugar sweetens well, but you can use brown sugar for a richer flavor, or coconut sugar if you’re looking for a less refined option. Both will add a unique touch!
Cocoa Powder: Unsweetened cocoa adds that delicious chocolate flavor. If you’re out, you can try using Dutch-processed cocoa or carob powder for a different flavor profile.
Chocolate Chunks/Chips: Semi-sweet chocolate brings richness. You can swap it for dark chocolate or even white chocolate if you’re feeling adventurous!
How Do I Get the Perfect Swirl Effect in My Cookies?
Creating that swirl effect can be tricky but fun! After combining your chocolate and peanut butter doughs, use the back of a spoon or a knife to gently mix just the surface—not too much! You want a marbled look, not a fully mixed batter.
- Drop spoonfuls of both doughs side by side on the baking sheet.
- Take your spoon or knife and gently swirl through both types of dough. Practice makes perfect, so don’t worry if it’s not perfect your first time!
Remember, the main goal is to keep it visually appealing while ensuring each bite has that yummy blend of flavors. Happy baking!

How to Make Sourdough Chocolate Peanut Butter Swirl Cookies
Ingredients You’ll Need:
For the Cookie Dough:
- 1 cup sourdough starter discard (unfed)
- 1 cup creamy peanut butter
- 1 cup granulated sugar
- 1 large egg
- 1 teaspoon vanilla extract
- ½ cup all-purpose flour
- ¼ cup unsweetened cocoa powder
- ½ teaspoon baking soda
- ¼ teaspoon salt
- ½ cup semi-sweet chocolate chunks or chips
- Flaky sea salt for sprinkling
How Much Time Will You Need?
This recipe will take about 15 minutes to prepare and 10-12 minutes to bake. Allow some extra time for cooling. So, in total, you’re looking at around 30 minutes before you can enjoy these delicious cookies!
Step-by-Step Instructions:
1. Preheat Your Oven:
Start by preheating your oven to 350°F (175°C). Also, line a baking sheet with parchment paper to keep your cookies from sticking.
2. Mix the Wet Ingredients:
In a large mixing bowl, combine the sourdough starter discard, creamy peanut butter, and granulated sugar. Use a spoon or mixer to blend everything together until it’s smooth and creamy.
3. Add the Egg and Vanilla:
Now, beat in the egg and vanilla extract. Make sure everything is well mixed, so your cookies turn out delicious!
4. Combine the Dry Ingredients:
In another bowl, whisk together the flour, cocoa powder, baking soda, and salt. This will ensure your dry ingredients are evenly distributed.
5. Mix It All Together:
Gradually add your dry mixture to the wet ingredients, stirring gently until just combined. Be careful not to overmix; a little lumpiness is okay!
6. Fold in the Chocolate:
Gently fold the chocolate chunks or chips into your dough until evenly distributed. Yum!
7. Shape the Cookies:
Using a spoon or a cookie scoop, drop rounded spoonfuls of dough onto your prepared baking sheet, leaving some space between them to spread.
8. Create the Swirl:
If you’d like, you can create a swirl effect! Just use the back of a spoon or a knife to gently swirl the dough a bit, mixing the chocolate and peanut butter visually.
9. Add Some Sea Salt:
Sprinkle a few flakes of flaky sea salt on top of each cookie for a little extra flavor contrast.
10. Bake the Cookies:
Place your baking sheet in the oven and bake for 10-12 minutes. You want the edges set but the centers to remain soft!
11. Cool Down:
Once they’re done, let the cookies cool on the baking sheet for about 5 minutes. Then, transfer them to a wire rack to cool completely.
Enjoy your rich, tangy sourdough chocolate peanut butter swirl cookies warm from the oven or at room temperature!
Can I Use a Different Nut Butter?
Absolutely! You can substitute the creamy peanut butter with almond butter, cashew butter, or sunflower seed butter for a nut-free option. Just keep in mind that the flavor will change slightly based on the nut butter you choose!
How Should I Store Leftover Cookies?
Store any leftover cookies in an airtight container at room temperature for up to 5 days. If you’d like to keep them longer, you can freeze them in a sealed bag for up to 3 months. Just remember to separate layers with parchment paper to prevent sticking!
Can I Omit the Cocoa Powder?
Yes, you can omit the cocoa powder if you’d prefer plain peanut butter cookies. You might want to reduce the flour slightly to maintain the right texture. The cookies will still be delicious!
Why Is My Dough Too Thin?
If your dough seems too thin, you might need to add a bit more flour. Start by adding a tablespoon at a time until you reach the desired consistency. It’s important not to overmix, as this could affect the texture of the cookies!



