Pre-heat the oven to 375. Grease a 24-cup mini-muffin pan. In a
large bowl, whisk together the flour, garlic powder and baking
powder; whisk in the milk and egg. Stir in the mozzarella, sausage
and pepperoni; let stand for 10 minutes.
Stir the batter and divide among the mini-muffin cups. Bake until
puffed and golden, 20 to 25 minutes.
Meanwhile, microwave the pizza sauce until warmed through.
Serve the puffs with the pizza sauce for dipping.