In a small saucepan, combine bourbon, brown sugar, soy sauce, Dijon mustard, minced garlic, and apple cider vinegar. Bring to a simmer over medium heat and cook for 5-7 minutes until slightly thickened.

In a mixing bowl, combine ground beef, salt, black pepper, and Worcestershire sauce. Form into 8 small patties.

Preheat the grill to medium-high heat. Grill the patties for about 3-4 minutes per side, or until they reach an internal temperature of 160°F.

If using cheese, place a slice on each patty during the last minute of cooking to melt.

Toast the slider buns on the grill for 1-2 minutes. Place each patty on a bun and drizzle with bourbon sauce. Serve immediately.