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Peanut Butter Stuffed Brownies – rich, fudge brownies that are stuffed with peanut butter cups, topped with melted chocolate and more peanut butter cups!
I am a sucker for peanut butter cups and pretty much want to eat them in any form. Or in something that just tastes like them, like this Peanut Butter Cup Pie, that is the most requested dessert around here.

So you all know that I have a huge soft spot for brownies. And I have a slight obsession with all things peanut butter cups. It should come as no surprise that I put them together and am giving you these peanut butter brownies. I have made them multiple times before, but I finally decided to take pictures and share them with you. Peanut Butter Cup Brownies are another version that has a frosting made with peanut butter cups on top!
Because seriously, fudgy brownies stuffed with peanut butter cups is like heaven. There is just something about brownies from scratch that makes them better!

What You’ll Need
Be sure to scroll to the bottom of the post for the FULL PRINTABLE recipe card.
- Unsweetened Chocolate
- Vegetable Oil
- Granulated Sugar
- Eggs
- All-Purpose Flour
- Baking Powder
- Salt
- Reese’s Peanut Butter Cups – you want whole ones for the filling and some chopped for the topping
- Chocolate Chips
For this peanut butter brownie recipe, you can use your favorite homemade brownies, or you can use a box mix. Either works and both are super easy. Just pour half the batter in the pan, and then add a layer of peanut butter cups before adding the rest of the batter.
Then after you bake them, when they are still hot you sprinkle on chocolate chips! They get all melty, and you spread it around before topping with more peanut butter cups! I am drooling just thinking about these brownies again! Make your weekend just a little better and make these peanut butter stuffed brownies now! Trust me, you will not be disappointed.

Brownies are pretty much my ultimate weakness, and these peanut butter cup brownies rank right up with one of my all time favorites. !
And if you have any peanut butter cups left, check out some of my favorite Reese’s Peanut Butter Cups recipes to use them up!
More Brownie Recipes
- Peanut Butter Cheesecake Brownies
- Chocolate Mousse Brownies
- French Silk Brownies
- Salted Caramel Brownies
- Lunch Lady Brownies

Peanut Butter Stuffed Brownies
Video
Equipment
Ingredients
Brownies
- 2 oz unsweetened chocolate, melted
- 1/3 cup canola oil
- 2 whole large eggs
- 1 cup granulated sugar
- 3/4 cup all-purpose flour
- 1/2 teaspoon baking powder
- 1/2 teaspoon salt
Topping
- 1 cup chocolate chips, (semi-sweet or milk chocolate)
- 1 cup chopped peanut butter cups
Filling
- 1 bag peanut butter cups, unwrapped
Instructions
- Preheat oven to 350º F. Prepare an 8 inch baking dish with non-stick spray or line with parchment paper.
- In a bowl mix together oil and melted chocolate. Stir in eggs and sugar until well blended. Add flour, baking powder and salt, and mix until well combined.2 oz unsweetened chocolate, 1/3 cup canola oil, 2 whole large eggs, 1 cup granulated sugar, 3/4 cup all-purpose flour, 1/2 teaspoon baking powder, 1/2 teaspoon salt
- Pour 1/2 the batter into prepared pan. Press peanut butter cups evenly over the batter until covered. Pour remaining batter over, and spread evenly.1 bag peanut butter cups
- Bake for 20-25 minutes until a tester comes out mostly clean.
- Immediately sprinkle with chocolate chips. Cover with foil or a baking sheet for 10 minutes. Remove foil and spread the melted chocolate over the brownies. Sprinkle the chopped peanut butter cups over the top.1 cup chocolate chips, 1 cup chopped peanut butter cups
- Let cool before serving.
Nutrition
Nutrition information is automatically calculated, so should only be used as an approximation.













Can I use coca powder instead of melted chocolate?
Yes, there should be the conversion instructions on the back of the cocoa powder container. It is usually 1 ounce melted chocolate = 3 tablespoons cocoa powder + 1 tablespoon melted butter/margarine, cocoa butter, or oil