• 2 pounds ground beef
• ½ teaspoon garlic powder
• ½ teaspoon ground black pepper
• ¼ cup sliced green olives
• 4 slices Cheddar cheese
• 4 hamburger buns, split and toasted
• ¼ cup mayonnaise
• 4 tomato slices
• 4 onion slices
• 4 leaves lettuce

Directions

1. Preheat grill for medium heat and lightly oil the grate.
2. Combine ground beef, garlic powder, and black pepper in a bowl; mix until well combined. Press into 8 equal hamburger patties 1/4-inch thick. Place 1 tablespoon olives in the center of 4 patties. Top with remaining patties; pinch edges to seal.
3. Grill patties until no longer pink in the center, 6 to 8 minutes per side. An instant-read thermometer inserted into the center should read at least 160 degrees F (70 degrees C). Top each with 1 slice Cheddar cheese; remove from grill.
4. Place each patty on a bun; top with 1 tablespoon mayonnaise, 1 tomato slice, 1 onion slice, and 1 lettuce leaf.