In a 8"X8" square baking pan, with the bottom lined with parchment paper, spread 1/2 of the brownie batter evenly.
Flatten blondie batter into smaller pieces and place all over the brownie batter.
Spread remaining brownie batter to cover up the blondie batter pieces.
Bake at 350 F for 20 minutes, remove and place Reese's Nutcrackers pieces, bake for another 10-15 minutes until the sides of the brownie is starting to lift from the pan and toothpick insert does not have runny batter.
Cool completely before slicing. Enjoy!