Peanut Butter Cup Sourdough Brownies

Name: Peanut Butter Cup Sourdough Brownies
Prep time: 20 min
Cook time: 25 min
Total time: 45 min
Yield: 12 brownies
Ingredients: 1 cup all-purpose flour; 1/2 cup unsweetened cocoa powder; 1/2 tsp baking powder; 1/4 tsp salt; 1/2 cup unsalted butter; 1 cup granulated sugar; 2 large eggs; 1 tsp vanilla extract; 1/2 cup sourdough starter; 1 cup chocolate chips; 1 cup peanut butter cups, chopped

Highlighted under: Flour & Frosting Recipes

I absolutely love baking, and one of my favorite creations has to be these Peanut Butter Cup Sourdough Brownies. Combining the rich, fudgy texture of brownies with the nutty flavor of peanut butter and the tanginess of sourdough starter creates an irresistible treat. The first time I made these, my family couldn’t believe how delicious and moist they turned out. With each bite, you get the heavenly combination of chocolate and peanut butter, making them the perfect dessert for any occasion or just a sweet indulgence at home.

Created by

Anna

Last updated on 2026-01-27T09:57:28.010Z

When I first decided to incorporate sourdough into my brownie recipe, I was a bit skeptical about how the flavors would meld. To my delight, the sourdough added a subtle tang that perfectly complemented the sweetness of the chocolate and the richness of the peanut butter. I've found that the key is allowing the brownies to cool completely before cutting them; this helps them maintain their fudgy texture and makes them easier to slice!

The combination of textures creates a delightful surprise with every bite. The melted peanut butter cups nestled within the brownies add an extra layer of decadence. I encourage you to use high-quality chocolate for the best flavor, as it truly makes a difference in this delicious recipe.

Why You Will Love This Recipe
Rich chocolate flavor paired with creamy peanut butter
Irresistible fudgy texture that melts in your mouth
Unique twist with the addition of sourdough for moisture

Understanding Sourdough in Brownies

Incorporating sourdough starter into brownies not only adds a unique tang but also enhances the overall moisture of the baked goods. The natural fermentation process of sourdough breaks down some of the sugars, resulting in a more complex flavor profile. This slight acidity pairs beautifully with the rich chocolate, creating a depth that's hard to achieve with standard brownie recipes. If you’re new to using sourdough, remember to use active, bubbly starter for the best results.

When mixing the sourdough into the batter, it's essential to ensure it's at room temperature. Cold sourdough can shock the butter mixture, potentially affecting the emulsification process. Aim for a batter that is glossy and unified; if there are lumps, consider mixing a bit longer, but be careful not to overmix, as this can lead to denser brownies.

Chocolate and Peanut Butter Balance

For the ultimate peanut butter chocolate experience, quality ingredients matter. Choosing high-quality dark or semi-sweet chocolate chips maximizes flavor and richness, creating a delightful contrast to the creamy peanut butter cups. If you prefer more peanut flavor, consider using peanut butter chips or a slightly higher ratio of chopped peanut butter cups in the mix.

While adding chocolate chips to the batter before baking, it's crucial to fold them gently. This technique ensures they are evenly distributed without overworking the brownie mix. Keep an eye on the baking time; brownies should be set around the edges with a soft center if a toothpick inserted comes out with a few moist crumbs—this ensures a fudgy texture.

Tips for Perfect Brownies

When it comes to slicing your brownies, allow them to cool completely in the pan. This cooling period helps them set, making for cleaner cuts. For an even more decadent treat, serve these brownies warm with a scoop of vanilla ice cream or a drizzle of chocolate sauce, which complements the flavors beautifully.

If you're looking to make these brownies ahead of time, they can be stored at room temperature for up to four days or kept in the refrigerator for up to a week. For longer storage, consider freezing them in an airtight container, with parchment paper between layers for easy removal. To enjoy, simply thaw at room temperature or warm them briefly in the microwave before serving.

Ingredients

For the Brownies

1 cup all-purpose flour
1/2 cup unsweetened cocoa powder
1/2 tsp baking powder
1/4 tsp salt
1/2 cup unsalted butter
1 cup granulated sugar
2 large eggs
1 tsp vanilla extract
1/2 cup sourdough starter
1 cup chocolate chips
1 cup peanut butter cups, chopped

Instructions

Steps to Make Brownies

Preheat Oven

Preheat your oven to 350°F (175°C) and grease a 9x9 inch baking pan.

Mix Dry Ingredients

In a bowl, whisk together flour, cocoa powder, baking powder, and salt.

Melt Butter and Combine

In a saucepan over low heat, melt butter. Remove from heat and stir in sugar, eggs, and vanilla until smooth. Then mix in sourdough starter.

Combine Mixtures

Gradually add the dry ingredients to the butter mixture until just combined. Fold in chocolate chips and peanut butter cups.

Bake

Pour the batter into the prepared pan and smooth it out. Bake for about 25 minutes or until a toothpick comes out clean.

Cool and Serve

Let the brownies cool in the pan before slicing into squares and enjoying.

Enjoy Your Brownies!

Pro Tips

For an extra kick, drizzle some melted chocolate over the cooled brownies or top with a dusting of powdered sugar before serving.

Ingredient Substitutions

If you're looking to make these brownies gluten-free, you can substitute all-purpose flour with a gluten-free blend. Make sure the blend contains xanthan gum, as it helps bind the ingredients, giving your brownies the right texture. Additionally, for a dairy-free option, use coconut oil or a dairy-free butter substitute in place of the unsalted butter.

For those who may want to reduce sugar, consider using a sugar substitute like coconut sugar or a stevia blend. Keep in mind that moisture levels may vary; adjust the quantity of sourdough starter slightly if the batter appears too thick.

Common Troubleshooting Tips

If your brownies end up too dry, it might be due to overbaking. Keep a close eye on them during the last few minutes and use the toothpick test—remove them when there are a few moist crumbs attached. For overly dense brownies, ensure you’re not overmixing after adding the dry ingredients, as this can develop gluten and make them tough.

In case your brownies spread too much while baking, check the temperature of your oven. An oven thermometer can help ensure it’s accurate, as even minor temperature fluctuations can affect baking times and results.

Serving Suggestions

These Peanut Butter Cup Sourdough Brownies can be served on their own, but dressing them up can elevate the dessert experience. Consider garnishing with crushed peanuts or a dusting of powdered sugar for an elegant touch. Pair them with fresh berries for a pop of color and a refreshing contrast to the richness.

Another fun serving idea is to make brownie sundaes. Place a warm brownie in a bowl, top with ice cream, a drizzle of chocolate sauce, and sprinkle with chopped peanuts or additional peanut butter cups. This makes for a delightful dessert that impresses at gatherings!

Questions About Recipes

→ Can I use a different flour?

Yes, you can substitute with gluten-free flour, but it might change the texture slightly.

→ How should I store the brownies?

Store them in an airtight container at room temperature for up to a week.

→ Can I freeze these brownies?

Absolutely! Wrap them tightly and freeze for up to three months.

→ What can I use instead of sourdough starter?

You can substitute with an equal amount of yogurt or buttermilk, but it will change the flavor slightly.