These brownies with Reese's Pieces are for all of my peanut butter chocolate lovers out there! Easy and fudgy and chock full of Reese's Pieces.
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I've had a love affair with chocolate and peanut butter going for as long as I can remember. These Brownies with Reese's Pieces are just the latest in a long line of peanut butter chocolate recipes that have come out of my kitchen, and now I'm bringing it to you!
Other Chocolate and Peanut Butter Dessert Recipes You'll Love
Ingredient List
- flour
- sugar
- eggs
- cocoa powder
- butter
- Reese's Pieces

How to Make Reese's Brownies
- Melt butter and pour into a bowl with sugar - stir to combine.
- Add flour and cocoa powder
- Stir to combine, then add the Reese's Pieces
- Pour into a lined baking pan and bake

Tips and Tricks
- The way to get truly fudgy brownies is to just under bake them by a few minutes. When you do the poke test you want there to be a teeny tiny bit of batter still clinging to the toothpick (or whatever you use to test), but the batter should not be wet.
- Use room temperature eggs for the best overall final result.
- Melted butter gives you a chewy fudgy brownies - if you were to make the recipe with room temperature butter, you'll end up with a more cake-like brownie.
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Why do the edges of my brownies get hard?
Brownies get hard when they overbake. It's important to take your brownies out of the oven before they're 100% baked because they keep baking as they sit and cool in the pan.
How to store leftover brownies
Store any leftover brownies in an air-tight container at room temperature for up to three days. (they wont last that long 🙂 )
Why you shouldn't overmix the batter
Overmixing whips more air into the batter, resulting in a lighter fluffier texture. While this is great for cakes, we want our brownies to be dense and fudgy. Only stir until you can no longer see streaks of dry flour.

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Brownies with Reese's Pieces
Ingredients
- 1 cup unsalted butter melted
- 2 cups granulated sugar
- 2 tsp vanilla extract
- 4 eggs
- 1 cup all purpose flour
- ¾ cup cocoa powder
- ½ teaspoon baking powder
- ¼ teaspoon salt
- 1 cup Reese's Pieces + extra for scattering on top
Instructions
- Preheat oven to 350 and line a 9x9 baking pan with parchment paper.
- In a large bowl, stir together the melted butter and sugar and mix until light and fluffy pale yellow. Add the vanilla and then add the eggs one at a time, stirring to incorporate after each egg.
- Add the flour, cocoa powder, baking powder and salt and stir until just combined. Mix in the Reese's Pieces. Pour the batter into the prepared pan, and scatter some Reese's Pieces on top of the brownies.
- Bake for 30-35 minutes, checking for doneness starting at 30 minutes.
- Allow to cool fully in the pan before cutting.
How much flour it’s not listed on the ingredients list but it’s mentioned in the directions
Hi Kendall! Thanks so much for pointing that out! The recipe is fixed now! It gets one cup of flour. Hope you love them as much as I do!