Peanut Butter Blondies

March 26, 2011

These easy bar cookies are a must-try for all peanut butter lovers! The bars get their peanut flavor from three different sources: crunchy peanut butter, peanut butter chips, and chopped roasted peanuts. The texture is closer to chewy brownies than cake-like ones, and since chewy is my preference, I was very happy with how these turned out! If you prefer some chocolate flavor in addition to peanut butter, add 1 cup of bittersweet chocolate chips along with the peanut butter chips.

Because the butter is simply melted and does not have to be creamed with the sugar as in most cookie recipes, no special equipment (like a hand or stand mixer) is required, and these can be prepped and in the oven in about 15 minutes. The recipe is from the America’s Test Kitchen Family Baking Book.

Peanut butter blondies

Makes 24 bars


  • 1 1/2  cups (7 1/2 ounces) all-purpose flour
  • 1  teaspoon baking powder
  • 1/2  teaspoon salt
  • 8  tablespoons (1 stick) unsalted butter, melted and cooled
  • 1 1/2  cups packed (10 1/2 ounces) light brown sugar
  • 2  large eggs
  • 4  teaspoons vanilla extract
  • 1/2  cup crunchy peanut butter (not natural-style), room temperature
  • 1/2  cup (3 ounces) peanut butter chips
  • 1/4  cup (1 1/4 ounces) roasted and salted peanuts, chopped


  1. Adjust an oven rack to the middle position and heat the oven to 350 degrees F. Line a 13 by 9-inch baking pan with a foil sling and grease the foil.
  2. Whisk the flour, baking powder, and salt together in a medium bowl. In a large bowl, whisk the butter and brown sugar together. Whisk in the eggs and vanilla until combined. Whisk in the peanut butter until combined. Stir in the flour mixture until just incorporated. Stir in the peanut butter chips and peanuts
  3. Scrape the batter into the prepared pan and smooth the top. Bake the blondies until a toothpick inserted into the center comes out with a few moist crumbs attached, about 30 minutes, rotating the pan halfway through baking.
  4. Let the blondies cool completely in the pan, set on a wire rack, about 2 hours. Remove the blondies from the pan using the foil, cut into squares, and serve.


  1. Jeremy loved these bars. He called them magic brownies
    He generally does not like baked goods with nuts but, these he loved.

    • Excellent, so glad he enjoyed them! Sorry there weren’t any left over for you to try… Rob and Bekah took the last of them.

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