1. 1. Preheat the oven to 400°F (200°C).

2. 2. In a skillet, cook the ground beef with garlic until browned. Season with salt and pepper to taste.

3. 3. Slice the hamburger buns in half and spread butter on the cut side of each bun.

4. 4. Place the buttered buns on a baking sheet, cut side up.

5. 5. Top each bun with cooked ground beef, cheese, and pepperoni slices.

6. 6. Bake in the preheated oven for 10-12 minutes, or until the cheese is melted and bubbly.

7. 7. Serve hot and enjoy your delicious Garlic Cheeseburger Pizza!