Peanut Butter Blondies
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Prep Time: 15 minutes
Cook Time: 30 minutes
Total Time: 45 minutes
Servings: 12–15 squares
Category: Dessert
Notes After Making
Add
Ingredients
- ½ cup (113g) unsalted butter, melted and slightly cooled
- 1⅓ cups (265g) packed light or dark brown sugar
- ½ cup (125g) creamy peanut butter
- 1 large egg + 1 egg yolk
- 2 teaspoons pure vanilla extract
- 1⅓ cups (165g) all-purpose flour (spooned and leveled)
- ¾ teaspoon baking powder
- ¾ teaspoon salt
- ⅔ cup (about 130g) chocolate chips or Reese’s Pieces, optional
Instructions
Prepare the Pan
- Preheat oven to 350°F.
- Line a 9×9-inch baking pan with parchment paper, leaving an overhang for easy removal.
Make the Batter
- In a large bowl, whisk together melted butter and brown sugar until smooth.
- Whisk in peanut butter until fully combined.
- Add egg, egg yolk, and vanilla extract, mixing until smooth.
- Add flour, baking powder, and salt.
- Fold gently with a spatula until a thick batter forms.
- Fold in chocolate chips or Reese’s Pieces.
Bake
- Spread batter evenly into prepared pan.
- Bake for 28–30 minutes, checking at 28 minutes.
- A toothpick inserted should come out with a few moist crumbs (not wet batter).
- Continue checking every 2 minutes if needed.
Cool & Serve
- Cool completely in the pan.
- Lift out using parchment overhang and slice into 12–15 squares.
- Serve plain or with vanilla ice cream, if desired.
Jessica’s Notes
Best Served With
- Vanilla ice cream
- Whipped cream
Make Ahead
- Bake up to 2 days in advance.
- Store tightly wrapped at room temperature once cooled.
Storage
Store in an airtight container at room temperature for up to 4 days or refrigerate for up to 1 week.
Freezer-Friendly
Freeze cut bars for up to 2 months. Thaw at room temperature before serving.
Variations
- Swap chocolate chips for white chocolate or butterscotch chips
- Add chopped nuts for extra crunch
- Swirl in Nutella before baking
- Add flaky sea salt on top after baking
- Use almond butter instead of peanut butter for a different flavor profile
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