Sheet Pan Cheeseburger Sliders

Preheat oven to 350°F (175°C).

In a large bowl, combine the ground beef, dry onion soup mix, water, and egg. Mix with your hands until just combined.

Press the beef mixture into an even layer on a baking sheet.

Bake for 20 minutes. Carefully remove the pan from the oven and drain off any excess grease.

Sprinkle the diced onion over the cooked beef. Return to the oven and bake for another 10 minutes.

Remove from the oven. Use a spoon to spread the onions and juices evenly over the meat.

Layer the American cheese slices on top of the meat and onions.

Return to the oven for about 10 minutes, until the cheese is fully melted.

Remove from the oven. Place the top halves of the slider buns over the melted cheese.

Bake for a final 5 minutes to warm and steam the buns.

Remove from the oven. Cut the meat and cheese into 12 squares. Use a spatula to transfer the sliders onto the bottom buns and serve immediately.