01 -
Preheat your oven to 350°F (175°C) and line a muffin tray with paper cups.
02 -
Melt the butter in a medium-sized mixing bowl, then blend in both sugars until they are well mixed.
03 -
Add in the eggs and peanut butter, stirring until the mixture is silky smooth.
04 -
In a separate bowl, combine the flour, cocoa, baking powder, and salt.
05 -
Slowly incorporate the dry mixture into the wet one, mixing just until blended.
06 -
Gently fold the chopped mini peanut butter cups into the batter.
07 -
Spoon the batter into the muffin cups, placing an additional peanut butter cup in each center.
08 -
Bake for 12-15 minutes until the edges are firm but the centers remain gooey.
09 -
Cool in the pan for 5 minutes before moving to a wire rack to finish cooling.