Making French Onion Burger Sliders is a straightforward process when you follow these easy steps:

1. Caramelize the Onions: In a large skillet, heat the butter and olive oil over medium heat. Add the sliced onions and cook, stirring occasionally, for about 15-20 minutes until they are golden brown and caramelized. Season with salt and pepper.

2. Prepare the Beef Mixture: In a bowl, combine the ground beef, garlic powder, Worcestershire sauce, salt, and pepper. Mix gently until just combined, being careful not to overwork the meat.

3. Form the Patties: Divide the beef mixture into 8 equal portions and shape them into small patties that will fit the slider buns.

4. Cook the Patties: In the same skillet used for the onions, add the patties. Cook for about 3-4 minutes on each side, or until they reach your desired doneness. Place the shredded cheese on top of the patties during the last minute of cooking, covering the skillet to help the cheese melt.

5. Toast the Buns: While the patties are cooking, you can toast the slider buns. Cut them in half and lightly butter the insides. Toast them in a separate skillet or under the broiler until golden brown.

6. Assemble the Sliders: On each bottom half of the toasted buns, place a beef patty topped with caramelized onions. Add the top half of the bun.

7. Serve: Arrange the sliders on a serving platter. Garnish with fresh thyme leaves if desired.

These steps will guide you through creating mouthwatering French Onion Burger Sliders that everyone will love!