Preheat oven to 350 degrees. In a large mixing add the white sugar, brown sugar, eggs and vanilla. Beat the ingredients on high with an electric mixer for 6 to 7 minutes until thick and glossy. In ...

Melt the chocolate in a heatproof bowl over hot water. Fold the melted chocolate into the buttercream and add the mint. Pipe onto the cold brownies.

Same goes for the brownie layer and the chocolate sauce ... And for a treat, consider mixing it up with fresh mint, strawberry, or gluten-free oreos. You could also double the brownie part ...