Created by Puppitypup on September 6, 2018
Step 1: Preheat oven to 300 degrees (convection if possible) and line a half-sheet with parchment.
Step 2: Melt butter, stir into brownie mix along with egg whites.
Step 3: Turn mixture out onto parchment, spread evenly to edges of parchment.
Step 4: Sprinkle chocolate chips and press in with your hands.
Step 5: Bake until done, 25 minutes or so. If not using convection, turn half way through baking time.
Step 6: Score brownies with a pizza slicer immediately after removing from oven.
Step 7: Let oven cool for 15 minutes, then put brownies back in oven with door closed until they are completely dry, about 15-20 minutes.
Step 8: Let brownies cool completely, then break along scored lines.