HAMBURGERS W/ROQUEFORT CHEESE & RED ONIONS
8 Ounces Roquefort cheese
2/3 Cup mayonnaise
2 Teaspoons red wine vinegar
1 Teaspoon red pepper sauce
4 Slices red onion, 1/2 inch thick
2/3 Cup barbecue sauce, hickory flavored
2 Pounds ground beef patties, sirloin
Combine first four ingredients in medium bowl and whisk until smooth. (Can be made 1 day ahead, bring to room temperature before serving).
Prepare grill for barbecuing - 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.
Place hamburgers on grill, flip after 4-5 minutes. Continuing grilling 4-5 minutes until done.
Place patties on bottom halves of buns. Top each with 1 onion slice, Roquefort Mayonnaise, then bun tops.
Can toast buns on grill, if desired.