Preheat Oven: Preheat oven to 375°F. Lightly grease or line a muffin tin.
Prep the dough: Roll pizza dough into a rectangle and cut into squares big enough to fit into the muffin cups with a little overhang. Press each square into the cups.
Fill the puffs: Add 1 tbsp pizza sauce to the bottom of each dough cup. Cover pizza sauce with mozzarella cheese. Layer 2–3 slices of pepperoni, then add a sprinkle of cheese on top.
Make garlic butter: Stir melted butter, minced garlic, and parsley together. Pour about 1 tbs of garlic butter mixture over each puff.
Bake and Broil: Bake for 20 minutes, and then broil on high for 3-5 minutes or until golden brown. Serve hot with extra pizza sauce for dipping.