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Easy Peanut Butter Blondies

Made with creamy peanut butter and a generous mix of Reese’s Peanut Butter Cups and chocolate chips, each bite of these Easy Peanut Butter Blondies is an indulgent experience. The golden brown edges give way to a soft, chewy center that will have you coming back for more. Plus, this peanut butter blondie recipe is incredibly easy to make, using just a few simple ingredients and a preheated oven to create a sweet treat everyone will love.

Stack of peanut butter blondies.

You can store these delicious blondies in an airtight container, but they’re so irresistible that they might not last long! Whether you’re baking for a party or just need a peanut butter fix, these blondies will surely be a hit.

Three peanut butter blondies stacked on top of a piece of parchment paper.

Ingredients

  • 1/2 cup unsalted butter, melted
  • 1 cup packed brown sugar
  • 1/2 cup creamy peanut butter
  • 1 large egg
  • 1 teaspoon vanilla extract
  • 1 cup all-purpose flour
  • 1/2 teaspoon baking powder
  • 1/4 teaspoon salt
  • 1 cup Reese’s Peanut Butter Cups, chopped
  • 1/2 cup chocolate chips
Flour, brown sugar, egg, vanilla, salt, chocolate chips, peanut butter, butter, and Reese's cups.

Directions

  1. Preheat your oven to 350°F. Lightly spray an 8-inch square (or equivalent size) baking dish with non-stick spray.
  2. Whisk together the melted butter and brown sugar until smooth and well combined. Add the peanut butter, egg, and vanilla extract, mixing until fully incorporated.
Creamy batter in a glass bowl.
  1. Sift in the flour, baking powder, and salt together. Add to the wet ingredients and stir gently until just combined.
  2. Gently fold in the chopped Reese’s Peanut Butter Cups and chocolate chips, ensuring they’re evenly distributed throughout the batter.
Chocolate chips and cut up Reese's cups on top of batter in a bowl.
  1. Pour the batter into the prepared baking pan, spreading it evenly. Bake for 25-30 minutes, or until a toothpick inserted into the center comes out mostly clean (a few moist crumbs are fine for a chewy texture).
Blondie batter in a glass baking dish ready to be baked.
  1. Let the blondies cool completely before slicing them.
Baked peanut butter blondies in a glass rectangle baking dish.

Notes and Tips:

  • Don’t Overmix the Batter: To keep your blondies chewy, mix the ingredients just until combined. Overmixing can lead to a denser texture, so be gentle when incorporating the dry ingredients.
  • Let Them Cool: For best results, let the blondies cool in the pan before slicing. This helps them set and makes it easier to cut them into neat squares.
  • Storage Tips: Store blondies in an airtight container at room temperature for up to 3-4 days. For longer storage, keep them in the fridge, and they will stay fresh for up to a week.
  • Customize with Mix-Ins: Feel free to customize the blondies by adding other mix-ins like peanut butter chips, white chocolate chips, or even a sprinkle of flaky sea salt for an extra burst of flavor.
  • Check for Doneness: Since every oven is different, check the blondies with a toothpick after 22 minutes. It should come out with a few moist crumbs for the perfect chewy texture, not completely clean.
Freshly baked peanut butter blondies cut into pieces.
Stack of peanut butter blondies.

Easy Peanut Butter Blondies

Reese's Peanut Butter Blondies are a chewy and delicious treat, filled with creamy peanut butter, Reese's Peanut Butter Cups, and chocolate chips. This easy recipe creates the perfect balance of sweet peanut butter flavor and chocolate in every bite.
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Course: Desserts
Cuisine: American
Prep Time: 10 minutes
Cook Time: 25 minutes
Cooling Time: 10 minutes
Total Time: 45 minutes
Servings: 12
Calories: 406kcal

Ingredients

  • ½ cup unsalted butter melted
  • 1 cup brown sugar packed
  • ½ cup creamy peanut butter
  • 1 large egg
  • 1 teaspoon vanilla extract
  • 1 cup all-purpose flour
  • ½ teaspoon baking powder
  • ¼ teaspoon salt
  • 1 cup Reese’s Peanut Butter Cups chopped
  • ½ cup chocolate chips

Instructions

  • Preheat your oven to 350°F. Lightly spray an 8-inch square (or equivalent size) baking dish with non-stick spray.
  • Whisk together the melted butter and brown sugar until smooth and well combined. Add the peanut butter, egg, and vanilla extract, mixing until fully incorporated.
  • Sift in the flour, baking powder, and salt together. Add to the wet ingredients and stir gently until just combined.
  • Gently fold in the chopped Reese’s Peanut Butter Cups and chocolate chips, ensuring they’re evenly distributed throughout the batter.
  • Pour the batter into the prepared baking pan, spreading it evenly. Bake for 25-30minutes, or until a toothpick inserted into the center comes out mostly clean (a few moist crumbs are fine for a chewy texture).
  • Let the blondies cool completely before slicing them.

Nutrition

Calories: 406kcal | Carbohydrates: 47g | Protein: 7g | Fat: 23g | Saturated Fat: 10g | Polyunsaturated Fat: 3g | Monounsaturated Fat: 8g | Trans Fat: 0.3g | Cholesterol: 38mg | Sodium: 196mg | Potassium: 202mg | Fiber: 2g | Sugar: 35g | Vitamin A: 289IU | Vitamin C: 0.1mg | Calcium: 61mg | Iron: 1mg
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These Reese’s Peanut Butter Blondies are a peanut butter lover’s dream—chewy, gooey, and packed with flavor. They’re perfect for an afternoon treat, a party, or whenever you need a little something sweet. Whether you’re baking for family, friends, or yourself, these blondies will be sure to satisfy your cravings.

Try this easy recipe today, and don’t forget to share your results in the comments! How did they turn out? Did you add any extra mix-ins? We’d love to hear from you!

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