Peanut Butter Candy Bar Blondies with Reese's and Chocolate

Prep: 15 minCook: 30 min32 barsmediumAmerican
Peanut Butter Candy Bar Blondies with Reese's and Chocolate

Rich, chewy blondies loaded with peanut butter flavor and studded with Reese's Minis, chocolate chips, and Reese's Pieces. The combination of melted butter and brown sugar creates a fudgy base, while molasses adds depth and prevents overly sweet results. Perfect for potlucks, bake sales, or satisfying serious chocolate-peanut butter cravings. The mix of textures from different candies makes each bite interesting, and the 9x13 pan yields plenty for sharing.

Ingredients

Yield: 32 bars
  • 1 stick unsalted butter
  • 1 ½ cups packed light brown sugar
  • 2 teaspoons vanilla extract
  • 1 teaspoon mild molasses
  • 2 large eggs, room temperature
  • ½ cup creamy or crunchy peanut butter
    almond butter1:1nut-freeketopeanuts-freeadds dairy

    use sunflower seed butter for nut-free

    Full guide →
  • 1 teaspoon baking powder
  • ½ teaspoon salt, plus an extra pinch
  • 1 ½ cups all-purpose flour
    almond flour1:1gluten-freeketogluten-free

    may need extra binding

  • 1 cup Reese's Minis
  • 1 cup Hershey's milk chocolate melting chips
  • ½ cup Reese's Pieces

Instructions

  1. 1

    Preheat oven to 350°F and line a 9x13 inch metal pan with nonstick foil

  2. 2

    Melt butter in small saucepan or microwave-safe bowl

  3. 3

    Pour hot butter into large mixing bowl and add brown sugar, stir well and let cool slightly so brown sugar melts

  4. 4

    Whisk in vanilla, molasses, room temperature eggs, and peanut butter

  5. 5

    Add baking powder and salt, whisk until blended, then gently whisk in flour

  6. 6

    Stir in melting chips, Reese's Minis and Reese's Pieces

  7. 7

    Spread in prepared pan and bake for 25 to 30 minutes or until wooden pick inserted in center comes out clean

Tips

Tip 1

Use room temperature eggs to prevent the mixture from seizing when combined with warm butter and sugar.

Tip 2

Don't overbake - blondies continue cooking in the hot pan after removal from oven, so slight underbaking ensures fudgy texture.

Good to Know

Storage

Store covered at room temperature for up to 5 days or refrigerate for up to 1 week

Make Ahead

Make up to 2 days ahead, store covered

Serve With

Serve at room temperature, cut into squares

Common Mistakes

Watch

Don't overbake to avoid dry, cakey texture

Watch

Let butter mixture cool slightly to prevent eggs from scrambling

Substitutions

Gluten-Free Swaps

all-purpose flour
almond flour1:1gluten-freeketogluten-free

may need extra binding

Full guide →

Nut-Free Alternatives

Reese's candies
any peanut butter cups or chocolate candies1:1nut-freeadds dairy

use sunbutter candies or chocolate chips

peanut butter
almond butter1:1nut-freeketopeanuts-freeadds dairy

use sunflower seed butter for nut-free

Full guide →
Find more substitutions →

FAQ

Can I use natural peanut butter instead of regular?

Regular peanut butter works best as natural versions can make the bars too oily or cause separation issues.

How long do these keep at room temperature?

Store covered for up to 5 days at room temperature, or refrigerate for longer storage up to 1 week.

Can I freeze these blondies?

Yes, wrap individual pieces or whole pan tightly and freeze for up to 3 months. Thaw at room temperature.