Creating Sheetpan Burger Sliders is straightforward if you follow these simple steps:

1. Preheat Oven: Preheat your oven to 400°F (200°C). Line a large sheet pan with parchment paper for easy cleanup.
2. Prepare the Beef Mixture: In a large bowl, combine ground beef, chopped onion, garlic powder, onion powder, salt, and pepper. Mix until just combined.
3. Shape the Patties: Spread the beef mixture evenly on the prepared sheet pan, pressing it down to create an even layer.
4. Bake the Patties: Place the sheet pan in the preheated oven and bake for 15-20 minutes, or until the meat is cooked through.
5. Add Cheese: Remove the sheet pan from the oven and place slices of cheddar cheese over the beef. Return to the oven for an additional 2-3 minutes, or until the cheese is melted.
6. Slice the Patties: Once the cheese has melted, use a sharp knife to cut the beef into squares, creating individual sliders.
7. Prepare the Buns: Slice the slider buns in half and place the bottom halves on a serving platter.
8. Assemble the Sliders: Place a beef square on each bun bottom. Top with lettuce, pickles (if using), and a drizzle of mayonnaise, ketchup, and mustard. Cap with the top bun.
9. Serve: Enjoy your delicious Sheetpan Burger Sliders while they’re warm!