Reese’s Peanut Butter Cup Cookie Bars

Peanut Butter Cookie Bars on a white plate.

Reese’s Peanut Butter Cup Cookie Bars

These cookie bars are soft and chewy with a little crunch from the nuts. It’s the perfect combination of peanut butter and chocolate. Each bite is loaded with Reese’s peanut butter cup minis, semisweet chocolate chips, and walnuts.

5 from 1 vote

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Course: Dessert

Cuisine: American

Prep Time: 10

Cook Time: 35

Cooling Time: 1

Total Time: 1 45

Servings: people

Calories: 544kcal

EQUIPMENT

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9x13-inch baking pan
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Parchment paper (optional for easier removal)
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Mixing bowls
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Hand mixer

INGREDIENTS

3 cups all-purpose flour
½ teaspoon baking powder
½ teaspoon baking soda
½ teaspoon salt
1 cup unsalted butter softened at room temperature
1 cup light brown sugar packed
¾ cup granulated sugar
2 large eggs
1½ teaspoons pure vanilla extract
1½ cups chopped Reese’s peanut butter cups minis divided
1 cup semisweet chocolate chips divided
½ cup chopped walnuts or peanuts, optional

INSTRUCTIONS

Preheat the oven to 350°F. Lightly grease the bottom of a baking pan and line it with parchment paper. Set it aside.
In a medium mixing bowl, whisk together 3 cups all-purpose flour, ½ teaspoon baking powder, ½ teaspoon baking soda, and ½ teaspoon salt. Set aside.
In a large mixing bowl or stand mixer fitted with a paddle attachment, cream together 1 cup unsalted butter, 1 cup light brown sugar, and ¾ cup granulated sugar at medium-high speed for about 2 minutes.
Add in 2 large eggs, 1½ teaspoons pure vanilla extract, and mix at medium speed until just incorporated.
Slowly add the flour mixture and mix until you get a soft dough consistency. Then fold in 1 cup of the 1½ cups chopped Reese’s peanut butter cups minis, ¾ cup of the 1 cup semisweet chocolate chips, and ½ cup chopped walnuts until evenly distributed in the dough. Set the remaining aside for topping.
Press the cookie dough into an even layer in the prepared baking pan. Sprinkle and gently press the remaining toppings into the top of the dough.
Bake for 30 to 35 minutes or until a toothpick inserted in the center comes out clean.
Allow the bars to cool in the pan on a wire rack before cutting them into squares and serving.

NOTES

You can use regular-sized Reese’s peanut butter cups if you like. Just roughly chop them into smaller chunks.

Swap out the nuts with whichever is your favorite.

Make sure that the ingredients come to room temperature before mixing. This will help it mix easier and incorporate much more evenly.

NUTRITION