These baked cheeseburger sliders are juicy, beefy, and cheesy. They're everything you love about cheeseburgers baked in miniature form, perfect for easy weeknight meals and game-day entertaining.
Heat a large skillet over medium heat. Add the ground beef and onions. Cook until beef is no longer pink, crumbling the meat as it cooks. Drain the excess fat.
2 pounds ground beef, 1 cup diced onion
To the browned meat, add the ketchup, mustard, Worcestershire sauce, salt, and pepper. Stir to combine. Simmer for 2-3 minutes.
1 cup ketchup, ¼ cup yellow mustard, ½ tablespoon Worcestershire sauce, ½ teaspoon Kosher salt, ½ teaspoon black pepper
Meanwhile, in a small saucepan, melt the butter and stir in the parsley and dried onion and garlic.
Slice the entire slab of slider buns in half, leaving them intact. Place the bottom of the buns in a 9x13 casserole dish. Brush some of the butter mixture on the buns. Top with Cheddar cheese. Spread the beef mixture evenly over the buns and cheese. Top with American cheese. Arrange the pickle slices evenly over the sliders.
12 slider buns, 6-8 slices deli Cheddar cheese, 6-8 slices deli American cheese, 12 bread and butter pickles
Brush the inside of the top buns with some of the butter. Arrange the buns on top of the sliders. Brush the top with the remaining butter.
Cover the dish with aluminum foil. Bake for 20-30 minutes until cheese is melted and sliders are warm throughout. Serve.
Notes
Store the sliders in an airtight container or wrap the casserole dish tightly with plastic wrap to keep them fresh. These burgers will keep for 3 to 4 days.
To reheat, wrap 1-2 sliders in a paper towel and microwave until warmed through. This method prevents the buns from drying out.
To make ahead, assemble the casserole up to 1 day in advance. Wait to brush the butter mixture over the top of the rolls until ready to bake.
The meat mixture can be made 2-3 days in advance. When ready to serve, assemble the casserole and bake according to the recipe directions.
To freeze baked sliders, allow them to cool. Wrap individual sliders in plastic wrap, then cover them with aluminum foil. Freeze for up to one month. Thaw overnight in the fridge before reheating.