Peanut Butter Swirl Brownies

Chocolate and peanut butter is one of the ultimate dessert flavor combinations. In this recipe, we’re giving you more of the good stuff. These easy to make peanut butter swirl brownies have been triple fudged inside and amply PB’d on top.


  • 6 oz bittersweet chocolate, chopped
  • 2 oz unsweetened chocolate, chopped
  • 1 1/2 sticks unsalted butter
  • 1 1/2 cups sugar
  • 2 tsp vanilla extract
  • 4 large eggs
  • 1 tsp. salt
  • 1 cup all-purpose flour
  • 1 cup semisweet chocolate chips
  • 1/2 cup creamy peanut butter


  1. Preheat the oven to 350 degrees F.  In a metal bowl, set over a pan of barely simmering water, melt the bittersweet and unsweet chocolate, and then melt the butter in with it.  
  2. Stir until smooth, remove the bowl from the heat, and allow the mixture to cool until it is lukewarm.
  3. Stir in the sugar and vanilla.  Add the eggs one and a time, and stir well after each addition.  Stir in the salt and flour until just combined.  Stir in the chocolate chips.
  4. Microwave the peanut butter for about 30 seconds or until it is pourable.  You may need to stir it a bit afterwards to heat it through.
  5. *Pour the brownie batter into a well-buttered and floured baking pan.  Smooth the top with a spatula and shake a bit to distribute the batter. 
  6. Then use a spoon or spatula to drop peanut butter in small round circles scattered over the top of the batter.  Use a knife to swirl the peanut butter into the brownie batter.  (It works well to drag the knife from top to bottom in lines vertically and then horizontally.)
  7. **Bake for about 25 to 30 minutes. Check by inserting a toothpick. It’s okay if some crumbs are sticking to it. 
  8. Allow the brownies to cool completely in the pan on a rack.  Then cut the brownies into bars.


Use creamy peanut butter.  You can start with a small amount (1/3 cup) and if needed, add more peanut butter.  We used 1/2 cup, but you can use more or less to your taste.

*We recommend using parchment paper in the baking pan.  Be sure to butter the bottom of the pan, then insert the parchment paper into the pan.  Finally butter the parchment paper, and flour it well.

**These brownies turn out great when they’re slightly underbaked.  Check it around the 25 minute mark with a toothpick.

Keywords: Brownie, chocolate, peanut butter