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Peanut Butter Brownie Swirl Cookies Recipe

5 Stars 4 Stars 3 Stars 2 Stars 1 Star 3.8 from 231 reviews
  • Author: Melanie
  • Prep Time: 15 minutes
  • Cook Time: 12 minutes
  • Total Time: 27 minutes
  • Yield: 24 cookies
  • Category: Dessert
  • Method: Baking
  • Cuisine: American
  • Diet: Vegetarian

Description

Delight in these irresistible Peanut Butter Brownie Swirl Cookies that combine rich, creamy peanut butter cookie dough with luscious brownie batter swirls, baked to golden perfection with a soft, chewy texture and optional flaky sea salt for a sweet and salty finish.


Ingredients

Scale

Cookie Dough

  • 1/2 cup unsalted butter, softened
  • 1/2 cup creamy peanut butter
  • 1/2 cup granulated sugar
  • 1/2 cup packed brown sugar
  • 1 large egg
  • 1 teaspoon vanilla extract
  • 1 1/4 cups all-purpose flour
  • 1/2 teaspoon baking soda
  • 1/4 teaspoon salt

Brownie Swirl

  • 1 cup prepared brownie batter (homemade or boxed, cooled)

Optional Topping

  • Flaky sea salt for sprinkling


Instructions

  1. Preheat and Prepare Baking Sheets. Preheat your oven to 350°F (175°C) and line two baking sheets with parchment paper to prevent sticking and ensure even baking.
  2. Cream Butter, Peanut Butter, and Sugars. In a large bowl, cream together the softened butter, creamy peanut butter, granulated sugar, and packed brown sugar until the mixture is light, fluffy, and well combined for a smooth cookie base.
  3. Add Egg and Vanilla. Beat in the egg and vanilla extract until the batter is smooth and fully incorporated, which adds moisture and flavor to the dough.
  4. Mix Dry Ingredients. In a separate bowl, whisk together the all-purpose flour, baking soda, and salt to evenly distribute the leavening and seasoning agents.
  5. Combine Dry and Wet Ingredients. Gradually add the dry ingredient mixture into the wet batter, stirring just until combined to form a soft, uniform dough without overmixing.
  6. Swirl in Brownie Batter. Drop tablespoons of the prepared brownie batter over the peanut butter cookie dough. Gently swirl the two batters together using a butter knife or spatula to create a marbled effect without blending completely.
  7. Form Cookies and Bake. Scoop approximately 1 1/2 tablespoons of the swirled dough and place on prepared baking sheets, spacing each cookie about 2 inches apart to allow spreading. Bake for 10–12 minutes until the edges are lightly golden and the centers are just set for a soft, chewy texture.
  8. Cool and Add Optional Topping. Let cookies cool on the baking sheet for 5 minutes before transferring to a wire rack. Sprinkle with flaky sea salt if desired to enhance the flavor contrast and add a gourmet touch.

Notes

  • Boxed brownie mix can be used for ease—simply prepare according to package instructions and cool before using.
  • For extra indulgence, press a few chocolate chips on top of each cookie before baking.
  • Do not overmix the swirl to maintain distinct marbled patterns throughout the cookies.
  • Allow cookies to cool slightly on the baking sheet to firm up before moving, preventing breakage.