These Copycat White Castle Sliders are made with thin, seasoned beef cooked over finely minced onions, then layered onto soft slider buns with dill pickles. They’re juicy, savory, easy to make, and perfect for a quick family meal, party, game day, or late-night craving.
Total Time:30 minutes
Yield:12 sliders
Ingredients
1 pound lean ground beef
1/2 teaspoon kosher salt
1/4 teaspoon black pepper
1/4 teaspoon garlic powder
1/4 teaspoon onion powder
2 tablespoons water
1 1/2 cups finely minced yellow onion
1 tablespoon unsalted butter
1/4 cup water, plus more if needed
12 small soft slider buns
12 dill pickle chips
6 slices American cheese, optional
1 tablespoon melted butter, optional
1 teaspoon sesame seeds, optional
Yellow mustard, optional
Ketchup, optional
Instructions
Prepare the Beef: Add ground beef, salt, black pepper, garlic powder, onion powder, and 2 tablespoons water to a bowl. Mix gently until just combined.
Flatten the Beef: Place the beef between two sheets of parchment paper. Press or roll it into an even rectangle about 1/4 inch thick.
Prepare the Onions: Heat a large skillet over medium heat. Melt the butter, add the finely minced onions, and cook for 2 to 3 minutes. Add 1/4 cup water.
Cook the Beef: Carefully place the flattened beef over the onions. Cover and cook for 3 to 4 minutes, allowing the steam and onions to flavor the beef.
Finish Cooking: Flip or separate the beef into 12 portions and continue cooking until the beef reaches an internal temperature of 160°F (71°C).
Add Cheese: If using cheese, place a small piece of American cheese over each portion during the final minute of cooking. Cover briefly until melted.
Toast the Buns: Lightly toast the cut sides of the slider buns in a skillet. Brush with melted butter first if desired.
Assemble: Place each beef portion with onions onto a slider bun. Add a dill pickle chip and your choice of mustard or ketchup.
Serve: Serve the sliders immediately while they’re warm and juicy.
Notes
Keep the beef thin for the best classic-style slider texture.
Finely minced onions are important because they soften quickly and spread evenly under the beef.
Don’t overmix the ground beef, as this can make the sliders dense.
American cheese is optional and creates a delicious cheeseburger-style variation.
For the best texture, serve the sliders immediately after assembly.
Leftover cooked beef can be refrigerated for up to 3 days or frozen for up to 2 months.
Nutrition values are estimates and may vary depending on the ingredients and brands used.
