Follow these simple steps to create your amazing cheeseburger sliders:

1. Preheat the Oven: Begin by preheating your oven to 350°F (175°C).
2. Mix the Beef: In a large bowl, combine the ground beef with garlic powder, onion powder, salt, and black pepper. Mix gently until just combined.
3. Form Patties: Divide the beef mixture into 12 equal portions and form them into small patties. They should be slightly larger than the slider buns since they will shrink while cooking.
4. Cook the Patties: Heat a large skillet over medium-high heat and add the patties. Cook for about 3-4 minutes per side until browned and cooked through.
5. Add Cheese: In the last minute of cooking, place a slice of cheese on each patty, covering the skillet to help it melt.
6. Prepare Buns: While the patties are cooking, slice the slider buns in half. Place the bottom halves on a baking sheet.
7. Assemble the Sliders: Once the cheese is melted, place each patty on a bottom bun half. If desired, add lettuce, tomato, and pickles on top of the cheese.
8. Cover and Bake: Place the top halves of the buns on each assembled slider. Cover the baking sheet with aluminum foil and bake for about 5-7 minutes to warm the buns.
9. Serve: Remove from the oven, and serve with your choice of condiments!