- 8 1/2-inch-thick slices red onions
- 1 1/3 cups bottled hickory-flavored barbecue sauce
- 3 pounds ground round beef, formed into eight 4- to 5-inch-diameter patties
- 8 4- to 5-inch-diameter hamburger buns, split
- Roquefort Mayonnaise
- Prepare barbecue (medium heat). Brush onions generously with barbecue sauce. Grill until onions are tender, brown and glazed, basting with barbecue sauce and turning occasionally, about 15 minutes.
- Sprinkle patties with salt and pepper. Grill patties until cooked through, about 5 minutes per side. Grill hamburger buns, cut side down, until lightly toasted, about 2 minutes. Place patties on bottom halves of buns. Top each with 1 onion slice, Roquefort Mayonnaise, then bun tops.