Bobby Flay's Hamburgers with Double Cheddar Cheese and Grilled Vidalia Onions

• 2 lb. ground chuck
• Salt and freshly ground black pepper
• 8 slice white cheddar cheese
• 8 slice yellow Cheddar cheese
• 2 tbsp. olive oil
• 2 Vidalia onions
• 8 Hamburger buns
• horseradish mustard
• 8 leaves romaine lettuce
• Pickles and ketchup (optional)

1. Preheat grill to high.
2. Shape the beef into eight 4-oz.
3. burgers and season both sides with salt and pepper to taste.
4. Grill for 3 to 4 minutes on each side for medium-rare, or to desired doneness.
5. During last minute of cooking, add 2 slices of cheese (one of each kind) to each burger; cover grill and let the cheese melt, approximately 1 minute.
6. Meanwhile, brush olive oil on both sides of the onion slices and season with salt and pepper.
7. Grill onions for 3 to 4 minutes on each side, until golden brown.
8. Place burgers on buns; top with horseradish mustard, lettuce, grilled onions, pickles, and ketchup, if you like.

ground chuck, salt, cheddar cheese, cheddar cheese, olive oil, vidalia onions, buns, horseradish, romaine lettuce, pickles

Taken from www.delish.com/recipefinder/bobby-flay-cheeseburgers (may not work)