Line two 8 x 8 inch pans with parchment paper.
Prepare your brownie mix according to the label.
Split the batter among the two pans and bake until done, which will depend on your recipe.
Freeze the layers after they cool for at least 20 minutes.
Line an 8 x 8 inch pan with crisscrossed plastic wrap.
Place one frozen brownie sheet in the lined pan.
Scoop your ice cream onto the brownie and smooth.
Top with the remaining brownie sheet.
Wrap and freeze for at least 2 hours.
Cut into bars and serve. Eat immediately.