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Easy Peanut Butter Brownies Recipe for Chewy, Gooey Homemade Bars

A gooey batch of Peanut Butter Brownies with a rich, soft center, perfect for fans of Best Peanut Butter Brownies.

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These Peanut Butter Brownies come together quickly with basic pantry staples and bake into a soft, rich, peanut-butter-forward dessert. Serve them warm with ice cream for a simple treat that tastes like a bakery favorite.

Ingredients

Scale
  • 1 cup creamy peanut butter
  • 11 tablespoons unsalted butter, softened
  • 1 cup packed light brown sugar
  • 1 â…“ cups white granulated sugar
  • 2 teaspoons vanilla extract
  • 4 large eggs
  • 2 teaspoons baking powder
  • 1 teaspoon salt
  • 2 cups all-purpose flour

Instructions

  1. Preheat the oven to 325°F.
    Before you begin mixing, set your oven to 325°F so it has time to fully heat. Grease a 9×13-inch baking pan well and set it aside. A properly prepared pan helps the Peanut Butter Brownies release cleanly after baking.
  2. Blend the wet ingredients and sugars.
    In a large mixing bowl, or in the bowl of a stand mixer, combine the peanut butter, softened butter, brown sugar, white sugar, and vanilla extract. Beat the mixture until it looks smooth, creamy, and fully incorporated. This step should create a thick, glossy base for the Peanut Butter Brownies.
  3. Work in the eggs.
    Add the eggs and beat again until the batter becomes even and silky. Scrape down the bowl as needed so no streaks of egg or sugar remain. The mixture should look cohesive before you move to the next step.
  4. Add the dry ingredients.
    Sprinkle in the baking powder, salt, and flour. Mix on low speed or stir gently by hand just until the batter comes together and no dry pockets remain. Stop as soon as the flour disappears. Overmixing can make the Peanut Butter Brownies less tender.
  5. Transfer the batter to the pan.
    Spoon the batter into the greased 9×13-inch pan. Use a spatula to spread it evenly from edge to edge, smoothing the top so the bars bake uniformly.
  6. Bake until set.
    Place the pan in the oven and bake for 40 to 45 minutes. The top should look set and spring back slightly when touched. Keep an eye on the edges as the bars bake; if they begin to darken too quickly, shield them with foil.
  7. Cool before cutting.
    Remove the pan from the oven and let the Peanut Butter Brownies cool completely in the pan before slicing. Cooling helps them firm up so you get cleaner squares and a better final texture.

Notes

  • Line or cover the edges with foil if they brown faster than the center.
  • For a thicker bar, bake in an 8×8-inch pan and extend the baking time as needed.
  • Slightly underbaking helps keep the center soft and chewy.
  • Let the bars cool fully before slicing for the neatest results.