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Peanut Butter Fudge Cookie Bars

These peanut butter fudge cookie bars are the ultimate indulgent treat, combining soft, chewy peanut butter cookie layers with a rich, gooey chocolate fudge center. Each bite delivers a perfect balance of sweet, nutty, and chocolatey flavors with a melt-in-your-mouth texture. Easy to make with simple ingredients, these bars are perfect for sharing, gifting, or satisfying any serious dessert craving.
Prep Time15 minutes
Cook Time25 minutes
Total Time40 minutes
Servings: 16

Ingredients

For the Peanut Butter Cookie Dough

  • 2 packages peanut butter cookie mix about 17.5 ounces each
  • 1 large egg
  • 3 tablespoons vegetable oil
  • 1 tablespoon water

For the Chocolate Fudge Layer

  • 2 cups semi-sweet chocolate chips
  • 14 ounces sweetened condensed milk
  • ⅓ cup butter
  • 1 teaspoon vanilla extract

Instructions

Prepare the Pan and Dough

  • Preheat oven to 350°F and line a 9×13-inch baking pan with foil. Lightly grease.
  • In a large bowl, mix the cookie mix with egg, vegetable oil, and water until a soft dough forms.

Create the Base Layer

  • Press half of the cookie dough evenly into the bottom of the prepared pan.

Make the Fudge Layer

  • In a saucepan over medium heat, combine chocolate chips, sweetened condensed milk, and butter.
  • Stir continuously until melted and smooth.
  • Remove from heat and stir in vanilla extract.

Assemble the Bars

  • Pour the warm fudge mixture over the cookie base and spread evenly.
  • Drop the remaining cookie dough over the top in small spoonfuls, leaving some areas of fudge visible.

Bake

  • Bake for about 25 minutes, until the top is lightly golden and set.

Cool and Serve

  • Let the bars cool completely in the pan before cutting into squares.

Notes

Cleaner slices: Chill the bars before cutting for neat, even squares.
Extra texture: Add chopped peanuts or walnuts to the fudge layer for crunch.
Chocolate variation: Use milk chocolate or dark chocolate chips for a different flavor profile.
Serving idea: Warm slightly before serving for a softer, gooier texture.
Storage: Store in an airtight container at room temperature for up to 3 days or refrigerate for up to 1 week.