Beef Sliders Caramelized Onions (Printable)

Tender mini beef patties crowned with sweet caramelized onions on soft slider buns.

# What You Need:

→ Caramelized Onions

01 - 2 large yellow onions, thinly sliced
02 - 2 tablespoons unsalted butter
03 - 1 tablespoon olive oil
04 - 1/2 teaspoon salt
05 - 1 teaspoon sugar (optional)
06 - 2 teaspoons balsamic vinegar (optional)

→ Beef Patties

07 - 1 lb ground beef (80% lean)
08 - 1 teaspoon kosher salt
09 - 1/2 teaspoon freshly ground black pepper
10 - 1 teaspoon Worcestershire sauce

→ Assembly

11 - 8 slider buns
12 - 4 slices cheddar or Swiss cheese, halved
13 - 2 tablespoons mayonnaise (optional)
14 - Lettuce leaves (optional)
15 - Sliced pickles (optional)

# How to Make It:

01 - Melt butter with olive oil in a large skillet over medium-low heat. Add sliced onions and salt, cooking for 20 to 25 minutes until soft and golden, stirring occasionally. Stir in sugar and balsamic vinegar during the last 5 minutes if desired. Remove from heat and set aside.
02 - Combine ground beef, kosher salt, black pepper, and Worcestershire sauce in a mixing bowl, mixing gently without overworking.
03 - Divide the beef mixture into 8 equal portions. Shape each portion into a small patty slightly larger than the slider buns.
04 - Preheat a grill pan or skillet over medium-high heat. Cook patties for 2 to 3 minutes per side until medium cooked. In the final minute, place cheese slices on patties to melt.
05 - Lightly toast slider buns. Spread mayonnaise on bottom halves if using. Layer lettuce, beef patties with melted cheese, caramelized onions, and pickles on buns. Cover with top halves and serve immediately.

# Expert Suggestions:

01 -
  • This recipe feels like a little secret for the best juicy mini burgers that vanish fast
  • The caramelized onions add just the right touch of sweetness that keeps everyone coming back
02 -
  • Patience is your best friend when caramelizing onions; rushing leads to bitterness rather than sweetness
  • Using 80% lean ground beef strikes the perfect balance between juiciness and firmness for sliders
03 -
  • Use a mix of butter and olive oil for caramelizing onions to achieve an ideal flavor and prevent burning
  • Let the patties rest for a few minutes off the heat before assembling to keep juices locked in

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