Skip to Content

Peanut Butter Cup Brownies

Peanut Butter Cup Brownies – Deliciously rich and fudgy brownies that are bursting with chocolate flavour, and stuffed with whole peanut butter cups. These brownies are a peanut butter lover’s dream!

Peanut Butter Cup Brownies

Peanut Butter Cup Brownies

Rich and fudgy brownies stuffed with Reese’s Peanut Butter Cups… Now that sounds like a peanut butter lover’s dream brownie!

These brownies are thick and fudgy, rich in chocolate flavour, and absolutely LOADED with peanut butter cups. Top with mini peanut butter cups for looks and for extra peanut butter overload in every bite.

This is a great brownie recipe for using up leftover candy, and it is very versatile. Have a bunch of Oreos instead? Make my Fudgy Oreo Brownies.

Looking for more peanut butter recipes? Check out my Peanut Butter Chip Cookies, Chocolate Peanut Butter Fudge, and my Chocolate Peanut Butter Bark.

Peanut Butter Cup Brownies

Ingredients you’ll need

Here’s a list of ingredients you’ll need to make these brownies. You can find my recipe card at the bottom of this post for the complete list with their amounts.

  • Unsalted butter
  • Granulated sugar
  • Cocoa powder: I love and use Dr. Oetker Fine Dark Cocoa Powder.
  • Salt
  • Large eggs: You’ll need 2.
  • Vanilla extract
  • Plain/all-purpose flour: You only need 1/2 cup (60g) of flour. Using such a small amount of flour is what makes for extra fudgy brownies.
  • Chocolate chips: You can use milk, dark, or semi-sweet.
  • Peanut butter cups: You’ll need 16 whole ones.
  • Mini peanut butter cups: Some whole, some halved – for topping.

How to make Peanut Butter Cup Brownies

To make these brownies, simply grab a large microwave-safe mixing bowl and add the butter, sugar, cocoa powder, and salt.

Heat for 30 seconds. Stir well, then continue heating in 30 second intervals (stirring after each one) until combined and very warm/hot to the touch.

Add the eggs and vanilla, and mix well until combined.

Fold in the flour until fully combined, then gently fold in the chocolate chips. Be sure not to let them ALL melt into the warm batter.

Pour half of the batter into an 8×8-inch square baking pan lined with parchment paper, and spread out evenly.

Place the peanut butter cups evenly over the batter, and top with the remaining batter.

Top with mini peanut butter cups – some whole, some halved.

Bake for 30 – 35 minutes, or until the centre is no longer jiggly and a toothpick inserted comes out almost clean with a few moist crumbs.

Allow to cool completely in the pan on a wire rack before cutting into bars. Alternatively, you can place the pan straight in the freezer for 1 hour, then slice and serve.

The printable recipe card with the FULL list of ingredients and instructions can be found at the bottom of this post.

NOTE: For best results, I highly recommend using the gram measurements (with a digital scale), rather than the cup measurements.

Cup measurements are simply not accurate enough, and I cannot guarantee the best results if you use them.

Peanut Butter Cup Brownies
Peanut Butter Cup Brownies

These Peanut Butter Cup Brownies are:

  • super quick and easy to throw together
  • incredibly thick and fudgy
  • rich in chocolate flavour
  • stuffed with whole peanut butter cups
  • sprinkled with mini peanut butter cups
  • the ultimate brownie for peanut butter lovers!

How long will these brownies last? These brownies will stay fresh, kept in an airtight container, at room temperature or in the fridge for up to 1 week.

Can I freeze these brownies? Yes, they also freeze well for up to 3 months. Thaw overnight in the fridge before serving.

If you try this recipe, let us know! Leave a comment, rate it, and don’t forget to tag me on Instagram and hashtag it #marshasbakingaddiction. I’d love to see!

Peanut Butter Cup Brownies
Peanut Butter Cup Brownies

Try these brownies next!

Craving more sweet treats? Subscribe to my newsletter to receive recipe updates straight to your inbox. You can also keep up to date on FacebookPinterest, and Instagram.

Peanut Butter Cup Brownies

Peanut Butter Cup Brownies

Yield: 16 brownies
Prep Time: 20 minutes
Cook Time: 35 minutes
Total Time: 55 minutes

Deliciously rich and fudgy brownies that are bursting with chocolate flavour, and stuffed with whole peanut butter cups. These brownies are a peanut butter lover's dream!

Ingredients

  • 1 and 1/4 sticks (140g) unsalted butter
  • 1 and 1/2 cups (300g) granulated sugar
  • 3/4 cup (75g) cocoa powder
  • 1/4 teaspoon salt
  • 2 large eggs, cold
  • 2 teaspoons vanilla extract
  • 1/2 cup (60g) plain/all-purpose flour
  • 1/2 cup (90g) chocolate chips
  • 16 peanut butter cups
  • Mini peanut butter cups, for topping

Instructions

  1. Preheat the oven to 180C/350F/Gas 4. Line an 8x8-inch square baking pan with parchment paper, and set aside.
  2. Place the butter, sugar, cocoa powder, and salt into a large microwave-safe bowl, and heat for 30 seconds. Stir well, then continue heating in 30 second intervals (stirring after each one) until combined and very warm/hot to the touch.
  3. Add the eggs and vanilla, and mix well until combined. Fold in the flour until fully combined, then gently fold in the chocolate chips. Be sure not to let them ALL melt into the warm batter.
  4. Pour half of the batter into the prepared pan, and spread out evenly. Place the peanut butter cups evenly over the batter, and top with the remaining batter. Top with mini peanut butter cups.
  5. Bake for 30 - 35 minutes, or until the centre is no longer jiggly and a toothpick inserted comes out almost clean with a few moist crumbs.
  6. Allow to cool completely in the pan on a wire rack before cutting into bars.

Notes

Brownies stay fresh, stored in an airtight container, at room temperature or in the fridge for up to 1 week. They also freeze well for up to 3 months. Thaw overnight in the fridge before serving.

Recommended Products

As an Amazon Associate, I earn from qualifying purchases. Thank you for supporting Marsha's Baking Addiction.

Nutrition Information:
Yield: 16 brownies Serving Size: 1 brownie
Amount Per Serving: Calories: 293Total Fat: 15gSaturated Fat: 7gTrans Fat: 0gUnsaturated Fat: 6gCholesterol: 43mgSodium: 105mgCarbohydrates: 38gFiber: 2gSugar: 30gProtein: 4g

Nutrition information isn’t always accurate.

Did you make this recipe?

Tag @MarshasBakeBlog on Instagram and hashtag it #marshasbakingaddiction

Baked Pumpkin Doughnuts with Maple Cinnamon Glaze
Previous
Baked Pumpkin Doughnuts with Maple Cinnamon Glaze
Caramel Crunch Bars
Next
Caramel Crunch Bars
Skip to Recipe