Preheat oven to 350 degrees F.
Prepare the brownies according to the instructions on the back of the box
Pour into a lightly greased pan (pan size will differ depending on the size called for on brownie mix)
Place conversation hearts on top of batter a couple of inches apart. No need to press them down as they will slightly sink in as the brownies bake.
Bake as directed on box.
Let cool before cutting.