Hamburger with Double Cheddar Cheese, Grilled Vidalia Onion and Horseradish Mustard

• 2 pounds freshly ground chuck
• Salt and freshly ground black pepper
• 8 slices white Cheddar, sliced 1/4-inch thick
• 8 slices yellow Cheddar, sliced 1/4-inch thick
• 8 hamburger buns
• Horseradish Mustard, recipe follows
• 8 leaves Romaine Lettuce
• Grilled Vidalia Onions, recipe follows
• Dill pickles, sliced
• Ketchup
• 1/2 cup Dijon mustard
• 2 tablespoons prepared horseradish, drained
• 2 Vidalia onions, sliced crosswise, 1/4-inch thick slices
• 2 tablespoons olive oil
• Salt and freshly ground black pepper

1. Preheat grill or a cast iron skillet to high.
2. Divide the beef into 8 (4-ounce) burgers.
3. Season on both sides with salt and pepper, to taste.
4. Grill or cook in the skillet for 3 to 4 minutes on each side for medium-rare doneness.
5. During last minutes of cooking add 2 slices of cheese to each burger, cover grill and let melt, approximately 1 minute.
6. Place burger on bun and top with Horseradish Mustard, lettuce, Grilled Vidalia Onions, pickles and ketchup.
7. Whisk mustard and horseradish together in a small bowl.
8. Brush olive oil on both sides of the onions and season with salt and pepper.
9. Grill the onion slices for 3 to 4 minutes on each side until golden brown.

freshly ground chuck, salt, white cheddar, buns, horseradish, vidalia onions, pickles, ketchup, dijon mustard, horseradish, vidalia onions, olive oil, salt

Taken from www.foodnetwork.com/recipes/bobby-flay/hamburger-with-double-cheddar-cheese-grilled-vidalia-onion-and-horseradish-mustard-recipe.html (may not work)