Prepare brownies with ingredients shown above and bake according to box instructions. (Since my brownies are a thinner layer I baked at 300°F for about 32 min) Start with 25 minutes and work your way up.
Allow brownies to cool then cut as many heart shapes as possible with cookie cutter.
Blend raspberries and cream with butter. Add powdered sugar, as much as necessary until it comes to frosting consistency.
Either pipe or spread icing with knife on to one side of brownie. Top with another brownie. Gently push down to make a sandwich.