This post contains affiliate links. Read the full disclosure here.

Jump to Recipe
5 from 16 reviews

These fudgy chocolate peanut butter brownies might be the most decadent and delicious brownies ever! They’re chocolatey, fudgy, and stuffed with a thick layer of peanut butter. Plus, you only need 9 ingredients, one bowl, and there’s no mixer required! I’ve tested the recipe without dairy and with dairy and it works both ways.

three brownie pieces with a layer of peanut butter inside stacked on top of each other with more brownies in the background.

If you’ve tried my Biscoff brownies or my Nutella brownies, you’ll know I love stuffed brownie recipes. I’m also a major peanut butter lover, so I knew it was time to make a chocolate peanut butter brownie recipe!

These peanut butter is first melted and then frozen to create a thick layer that fits perfectly into the shape of your pan. It is then layered in between two layers of brownie batter before being baked right into the brownies.

When testing these peanut butter brownies, I tested with both melted chocolate and cocoa powder but ultimately the version with only cocoa powder was fudgier and had a better texture. Another perk is that it makes the recipe that much easier because there’s no need to melt any chocolate.

These chocolate brownies with peanut butter are made using only a few pantry staples that you probably already have on hand! You don’t even need any leaveners – this helps achieve an ultra gooey and chewy brownie – not a cakey one!

The saltiness of the peanut butter layer balances out the sweetness of the brownies so perfectly, and because of the way the peanut butter is layered, you get just the right amount of peanut butter and chocolate flavor in every bite.

Ingredient Notes

ingredients to make brownies in small white bowls on a wooden backdrop.
  • Butter: feel free to use regular butter or dairy free butter in this recipe – it has been tested both ways. I personally like using salted butter.
  • Peanut Butter: I recommend a classic peanut butter like Skippy’s or JIF (the kind with sugar listed in the ingredients).

How To Make These Brownies

melted butter and sugars whisked together in a glass bowl on a wood countertop.

Whisk butter and sugars together.

wet ingredients for brownies mixed in a glass bowl on a wood countertop.

Add eggs and vanilla.

brownie batter in a glass bowl on a wood countertop.

Mix in the dry ingredients.

brownie batter in a square aluminium pan on a wooden countertop.

Add half the batter to a pan.

a slice of frozen peanut butter on top of brownie batter in a square aluminium pan

Add the frozen peanut butter layer.

brownie batter on top of peanut butter layer in a square pan on a wooden countertop

Top with more batter and bake!

brownies sliced into pieces with one brownie turned upward to show the inside peanut butter layer.

Recipe Developer Expert Tips

  • Try to line the baking pan with wax paper and not parchment paper when you freeze the peanut butter layer, it will make it easier to peel the frozen peanut butter off later! 
  • If you want an extra peanut butter kick I recommend sprinkling the top of the brownies with some peanut butter chips just before baking, or mixing them right into the batter. You can also do the same with regular semisweet chocolate chips if you want!

More Peanut Butter Recipes You’ll Love

If you make this recipe, let me know how it went in the comments below, I’d love to hear from you! You can also tag me on Instagram or Facebook so I can check it out!

Baking FAQ

These are the topics I’m asked about most frequently:

You can get these answers and more in my frequently asked questions post!

chocolate peanut butter brownies cut into squares with one in the middle on its side
5 from 16 reviews

Chocolate Peanut Butter Brownies

These chocolate peanut butter brownies are stuffed with a thick layer of peanut butter in every bite. Plus, you only need 9 ingredients, one bowl, and no mixer required!

Video

Ingredients
 

  • cup (300 g) creamy peanut butter
  • ¾ cup (158 g) butter, melted, (regular or vegan)
  • 2 eggs
  • ¾ cup (150) light brown sugar
  • ¾ cup (150 g) granulated sugar
  • 1 Tablespoon vanilla extract
  • ¾ teaspoon salt
  • ¾ cup (94 g) all-purpose flour
  • ¾ cup (65 g) unsweetened dutch processed cocoa powder

Instructions
 

  • Line your 8×8 baking pan with wax paper on all four sides (this helps the peanut butter not stick!). Melt the peanut butter in the microwave or on the stove. Pour the melted peanut butter into the pan and then freeze for one to two hours – you’ll know it’s ready when you can remove the peanut butter in one piece.
  • Once the peanut butter has frozen, preheat the oven to 350°Fahrenheit. In a small bowl, combine the flour with the salt and cocoa powder.
  • Melt the butter in the microwave or over the stove, then pour into a medium bowl. Add in both sugars and whisk until it becomes very thick and starts to pull away from the sides of the bowl. 
  • Add in the eggs and vanilla extract, then finally fold in the dry ingredients until just combined. 
  • Take the frozen baking pan out of the freezer and remove the wax paper with the peanut butter. Line the pan with parchment paper, making sure it is slightly overhanging so you can easily lift the brownies out once cooled. 
  • Pour half of the brownie batter into the prepared pan. Peel the peanut butter layer off of the wax paper and place it on top of the brownie batter. 
  • Pour the rest of the brownie batter on top and spread it so it is evenly covering the peanut butter layer. You can sprinkle over chocolate chips or peanut butter chips now if you wish!
  • Bake the chocolate peanut butter brownies for 30-40 minutes, or until a toothpick inserted in the middle comes out with a few wet crumbs. 

Notes

Lining the Pan: Be sure to line the pan so that all four sides are covered when freezing the peanut butter so that you can easily remove the layer in one piece.
Measuring Flour and Cocoa Powder: Properly measure your flour and cocoa powder using either a kitchen scale or the scoop and level method.
Baking Time: Baking time will vary based on your oven or the pan you use. I recommend using an aluminum baking pan for brownies. If using a glass baking dish instead of aluminium, keep in mind that the brownies will take longer to bake.
Optional: add chocolate chips or peanut butter chips to the batter or on top of the brownies before baking.
Storage Instructions: Store un-sliced in the pan, covered tightly with tinfoil 3-4 days. Store sliced brownies at room temperature in an airtight container. 
Calories: 298kcal, Carbohydrates: 31g, Protein: 7g, Fat: 18g, Saturated Fat: 4g, Polyunsaturated Fat: 5g, Monounsaturated Fat: 8g, Trans Fat: 0.05g, Cholesterol: 20mg, Sodium: 276mg, Potassium: 207mg, Fiber: 3g, Sugar: 22g, Vitamin A: 434IU, Calcium: 28mg, Iron: 1mg
Did you make this recipe?Please let us know by leaving a star rating and review!

The calorie information provided for this recipe is an estimate. The accuracy of the calories listed is not guaranteed.