Best Pull-Apart Cheeseburger Sliders - How To Make Pull-Apart Cheeseburger Sliders

Ingredients

• 2 tbsp. Cooking spray
• 2 tbsp. extra-virgin olive oil
• 1 medium onion, chopped
• 2 cloves garlic, minced
• 1 lb. ground beef
• 1 tsp. yellow mustard
• 1 tbsp. Worcestershire sauce
• Kosher salt
• 1 tsp. Freshly ground black pepper
• 12 slider buns (or dinner rolls)
• 12 slices cheddar cheese
• 1 medium tomatoes, sliced
• 1/2 c. pickle slices
• 3 tbsp. butter, melted
• 1/4 tsp. garlic powder
• 1 tbsp. sesame seeds