Grilled Onion Ground Beef Cheeseburgers are a classic restaurant favorite, customizable with your choice of cheese.
Combine Ground Beef, thyme and garlic in medium bowl, mixing lightly but thoroughly. Lightly shape into four 1/2-inch thick patties. Brush both sides of onion slices with oil.
Place 1 burger on bottom of each bun; top evenly with cheese and grilled onions. Close sandwiches.
Test Kitchen Tips Make sure your grill is clean (to prevent flare-ups) and the rack is well-oiled (to prevent sticking).