Preheat oven to 450 degrees. Line a sheet pan with parchment paper.
Split bagels and place four halves, cut side up, on sheet pan.
In a microwave-safe bowl, melt the garlic clove and butter together, about 1 minute.
Brush each bagel half evenly with the garlic butter mixture.
Top each bagel half evenly with the shredded mozzarella cheese.
Top each bagel half with two slices of pepperoni.
Bake the pizza bagels until cheese is melted and tops are starting to brown, about 10 minutes.
Heat your pasta sauce and serve with the pizza bagels for dipping.