Name: Peanut Butter Blondies
Prep time: 5 min
Cook time: 20 min
Total time: 25 min
Yield: 18
Cuisine: American
Ingredients: 1 (15.25 ounce) box yellow cake mix; ½ cup (1 stick) salted butter, melted; 2 large eggs, room temperature; 1 cup crunchy peanut butter; 2 cups Reese's mini peanut butter cups, roughly chopped and divided

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Peanut Butter lovers rejoice! Indulge your taste buds with delectable chewy peanut butter blondies. With a rich, buttery texture, these sweet treats offer a delightful balance of nutty goodness and irresistible sweetness.

If you’re a fan of peanut butter and chocolate, these Peanut Butter Blondies With Reese’s Cups are sure to satisfy your sweet tooth.

These easy-to-make blondies begin with a yellow cake mix! The batter comes together quickly and easily so this sweet treat makes a great dessert option for busy weeknights or last-minute get-togethers.

Ingredients You’ll Need To Make Peanut Butter Blondies With Reese’s Cups

You can find the complete printable recipe card at the end of this post.

Yellow cake mix – use your favorite brand!
salted butter – If you use unsalted butter, add a pinch of salt to the recipe.
large eggs, room temperature
crunchy peanut butter – You can use creamy peanut butter if desired.
2 cups mini peanut butter cups, roughly chopped and divided – Reese’s Pieces or Peanut Butter M&Ms are fun replacements!

Serving Suggestions

Peanut Butter Blondies With Reese’s Cups are a delicious treat. Here are a few serving suggestions to try:

1. Warm and Topped with Ice Cream

For a decadent dessert, warm up a peanut butter blondie and top it with a scoop of vanilla ice cream. The warm and gooey blondie pairs perfectly with the cool and creamy ice cream. This is my favorite way to enjoy these blondies!

For an extra indulgent treat, drizzle some caramel or chocolate sauce on top.

2. Cut Into Bite-Sized Pieces

If you’re serving a crowd, cut the peanut butter blondies into smaller bars. This makes them easy to grab and eat and allows people to try a blondie bite without committing to a larger bar.

3. Paired with Coffee, Tea, or A Tall Glass of Cold Milk

For me, milk is definitely the way to go when eating a delicious peanut butter and chocolate treat.

Peanut butter blondies also make a great accompaniment to a warm cup of coffee or tea. The rich, nutty flavor of the blondies pairs well with the bitterness of coffee or the sweetness of tea.

Enjoy these blondies for dessert, as an afternoon snack, or as a morning treat.

Storage and Shelf Life

Store cooled Peanut Butter Blondies with Reese’s Cups in an airtight container at room temperature. They will remain fresh for up to three days. You can store the blondies in the refrigerator for up to a week.

Make sure the container is large enough to hold all the blondies without them sticking together or getting crushed. If you need to stack them, place a piece of parchment in between so they don’t stick together.

For longer storage, the blondies can be frozen. Wrap them tightly in plastic wrap and then place them in an airtight container or freezer bag. They will keep in the freezer for up to three months.

When ready to enjoy, simply thaw the blondies at room temperature for a few hours before serving. They can also be warmed up in the microwave for a few seconds to give them a fresh-from-the-oven taste.

Steps For Making Peanut Butter Blondies Recipe

Preheat the oven to 350 degrees Fahrenheit and line a 9×13-inch baking dish with parchment paper or nonstick cooking spray.

In a large mixing bowl, add the cake mix and pour in the melted butter and egg, stirring until smooth and well combined.

Add peanut butter and mix thoroughly.

Gently fold 1 ½ cups of the mini peanut butter cups into the peanut butter mixture, leaving the remaining ½ cup aside. Be sure to distribute your peanut butter cup pieces in the batter evenly.

Spread batter evenly into your dish. The batter will be thick.

Bake blondies for 20-25 minutes. The blondies will be golden brown. They are done when a toothpick comes out clean when inserted near the center.

Let blondies cool slightly and sprinkle the remaining ½ cup peanut butter cups over the top. Press slightly.

Set the blondies aside to cool completely on a wire rack for about an hour. Cut into squares and serve.

The next time you want a sweet treat, these blondies are sure to hit the spot.

Try More of my Delicious Peanut Butter Desserts Below!

Yield: 18 squares