Peanut Butter Cup Brownies

Peanut Butter Cup Brownies are the ultimate treat when I want something rich, chewy, and packed with chocolatey peanut butter goodness. These brownies are a dreamy combination of a classic homemade brownie and everyone’s favorite candy: chocolate peanut butter cups. Whether I make them completely from scratch or take a shortcut with a box mix, the result is always decadent and delicious.

Why You’ll Love This Recipe

I love how indulgent and satisfying these brownies are. The fudgy chocolate base hugs the creamy peanut butter cups, creating pockets of melted goodness in every bite. They’re incredibly easy to prepare and perfect for sharing—although I’ll admit, I tend to keep a few extra for myself. They’re a guaranteed crowd-pleaser at potlucks, parties, or just for cozy nights in.

Ingredients

(Here’s a tip: Check out the full list of ingredients and measurements in the recipe card below.)

salted butter
granulated sugar
vanilla extract
large eggs
all-purpose flour
unsweetened cocoa powder
salt
baking powder
chocolate peanut butter cups (full-size)

Directions

I start by preheating my oven to 350°F and lining a 9×13 inch pan with parchment paper, lightly spraying it with nonstick spray.

Next, I beat the melted butter and sugar together until smooth, then mix in the vanilla and eggs—adding the eggs one at a time and beating well after each.

In a separate bowl, I sift together the flour, cocoa powder, salt, and baking powder, then combine it with the butter mixture to form a thick, chocolatey batter.

I spread half of this batter into the prepared pan, smoothing it into an even layer. Then, I arrange the peanut butter cups over the batter in neat rows.

Once that’s done, I spread the remaining batter over the top, carefully smoothing it out to cover all the peanut butter cups.

I bake the brownies for 30 minutes, until the center is set and a toothpick comes out with a few moist crumbs. Then I let them cool completely in the pan before lifting them out and cutting into bars.

Servings and timing

Serves: 12
Preparation time: 15 minutes
Cooking time: 30 minutes
Total time: 45 minutes

Variations

Sometimes I like to use mini peanut butter cups or chop up the full-size ones for a more scattered distribution.

If I’m short on time, I use a box brownie mix and just add the peanut butter cups—that shortcut still delivers big flavor.

I’ve also added a swirl of peanut butter on top before baking, which gives it an extra nutty finish.

storage/reheating

I keep these brownies in an airtight container at room temperature for up to 5 days. They also freeze beautifully—just wrap them individually and store in a freezer-safe bag for up to 3 months. When I want one, I let it thaw at room temperature or warm it briefly in the microwave for that fresh-baked taste.

FAQs

Can I use a brownie mix instead of making the batter from scratch?

Yes, I often use a box mix when I need something quick. I just prepare it as directed and layer it with the peanut butter cups as described.

How do I know when the brownies are done?

I look for a set center and test with a toothpick—if it comes out with a few moist crumbs, they’re ready. I avoid overbaking to keep them fudgy.

Can I use different kinds of peanut butter cups?

Absolutely. I’ve tried dark chocolate, white chocolate, and even crunchy peanut butter cups—each one adds a unique twist.

How should I cut them without making a mess?

I let the brownies cool completely before slicing. Using a sharp knife and wiping it clean between cuts helps get neat edges.

Can I double the recipe?

Yes, I double the ingredients and use a larger pan (or two pans) to make a bigger batch. They’re great for feeding a crowd.

Conclusion

Peanut Butter Cup Brownies are a dessert I turn to again and again because they never fail to impress. The gooey, chocolatey brownie and rich peanut butter filling is a combination I can never resist. Whether I make them from scratch or opt for a quicker version, they’re always a hit and always gone fast.

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