Chocolate-Peanut Butter Frosting

This frosting skips butter entirely and builds its richness from ¾ cup of peanut butter and ½ cup of cocoa powder instead. The result is a thick, fudgy spread with a pronounced peanut butter flavor running through deep chocolate.

Hot water is what brings the cocoa to life. Mixing cocoa with ¾ cup of hot water before adding the peanut butter blooms the cocoa, releasing its full chocolate flavor and creating a smooth paste without any dry, powdery grittiness. Skip this step or use cold water and the cocoa never fully dissolves.

Four and a half cups of sifted powdered sugar goes in gradually, and beating between additions is key. Dumping it all in at once creates a cloud of sugar dust and a lumpy frosting that takes forever to smooth out. Add it in three or four batches, beat until smooth each time, and you’ll end up with a glossy, spreadable consistency.

If the frosting is too thick after all the sugar is in, add hot water a teaspoon at a time. It doesn’t take much. Too much water and the frosting becomes soupy and won’t hold on a cake.

Kitchen Tips

• Sift the powdered sugar before measuring. Unsifted sugar has lumps that won’t beat out once mixed with the wet ingredients.
• Use creamy peanut butter, not chunky, for the smoothest frosting. Chunky leaves peanut pieces that make spreading uneven.
• This frosting sets firmer than buttercream as it cools. Frost your cake while it’s still at spreading consistency and work quickly.
• Store frosted cakes at room temperature. Refrigeration makes this frosting stiff and chalky.

Variations

• Extra fudgy: Use natural unsweetened cocoa and add 2 tablespoons of melted chocolate chips for a deeper, more intense chocolate layer.
• Honey peanut butter: Replace the vanilla with honey for a sweeter, more caramel-forward flavor.