Frosted Peanut Butter Cake Squares

This is the peanut butter and chocolate combo done right, baked into a tender cake square that captures everything a peanut butter cup wants to be at full size. The cake itself is rich with creamy peanut butter mixed straight into the batter, balanced by both white and brown sugars for depth and a soft, tender crumb. After cooling, a microwaved chocolate and peanut butter frosting gets spread over the top, then showered with 30 chopped miniature peanut butter cups. The candy pieces add visual drama plus pockets of melt-in-the-mouth chocolate-peanut-butter texture in every bite. Cut into 24 squares, each one delivers cake, frosting, and candy in proper proportion. The whole thing comes together in about 45 minutes, making it the kind of bake you can pull off after the kids’ game without spending all afternoon in the kitchen.

Pro Tips

• Use creamy peanut butter, not natural-style. Natural peanut butter separates as it bakes and creates oily streaks throughout the cake.
• Soften the butter at room temperature before creaming. Cold butter cannot incorporate the peanut butter smoothly.
• Cool the cake completely before frosting. Warm cake melts the chocolate frosting and the candy garnish slides right off.
• Microwave the frosting in 15-second bursts after the first minute. Overheating splits the chocolate and turns it grainy.

Variations

• Use Snickers or chopped Reese’s Pieces instead of peanut butter cups for different candy contrast.
• Add ½ cup of mini chocolate chips to the cake batter for extra chocolate pockets.
• Dust the frosted cake with flaky sea salt before adding the candy for a salted-caramel-style flavor pop.