1 Medium Red Onion, peeled
1 1/2 tsp of balsamic vinegar
1/4 tsp Dijon Mustard
1 tsp dried thyme, divided
1 lb lean ground beef
4 slices of reduced fat swiss cheese
4 french or kaiser rolls, split
Coat grill rack with nonstick cooking spray. Preheat gril to medium. Cut onion into quarters, leaving the stem and end intact. Grill onion 10 – 15 minutes per side or until softened. Turn once. Remove from grill and let cool. Thinly slice, discard stem end.
In a small bowl combine sliced onion, vinegar, mustard, and 1/4 teaspoon of the thyme. Set aside.
In a medium bowl mix ground beef with remaining 3/4 teaspoon thyme, and salt and pepper to taste. Shape in four patties.
Place patties on grill. Grill covered approx 8 minutes. Turn and top with cheese, and grill 7 minutes more or until approx 160 degrees. Place rolls, cut side down, on grill to toast. Place burgers in rolls, top with onion mixture, and serve.
Thanks, Kroger Meat Department of Walton, Kentucky!