Easy Homemade Chocolate Peanut Butter Brownies

5 from 9 votes

These gooey chocolate brownies have peanut butter swirls on top and in the middle! This easy homemade brownie recipe tastes like peanut butter cups!

Prep Time15

Cook Time25

Total Time40

Course: Dessert

Cuisine: American

Servings: brownies

Calories: 323kcal

Preheat oven to 350°F and line an 8-inch square metal pan with parchment paper hanging over the edges.
In a large microwave safe bowl or in a pan over low heat, melt the butter and chocolate chips until smooth. Whisk in the brown sugar really well, followed by the eggs (make sure it's cool enough at this point that the eggs don't cook). Whisk vigorously until lighter in color.
In a medium bowl, whisk together the flour, cocoa powder, and salt. Fold the dry ingredients into the wet ingredients just until the flour streaks disappear.
Spread half of the brownie batter into the prepared pan. Drop spoonfuls of half of the peanut butter over the batter. Repeat with remaining batter and peanut butter, then swirl the peanut butter on top with a butter knife.
Bake on the middle rack until the edges have set and a toothpick inserted in the center comes out with a few moist crumbs (about 25-35 minutes). Be careful not to over-bake (under-bake for gooier brownies).
Let the brownies sit in the pan until they're cool and firm enough to pull out of the pan. Transfer to a wire rack, cool completely, slice and enjoy!

Storage: Store brownies in an airtight container at room temperature for 4 days or in the freezer for 3 months.

Nutrition: The provided nutrition information is an estimate. The calorie accuracy is not guaranteed.