Grilled Red Onions With Balsamic Vinegar

Grrrrrgh!
Course : Grilling
From: HungryMonster.com
Serves: 6
 

Ingredients:

1 tablespoon olive oil
2 pounds red onions -- cut crosswise into 1/2 inch thick slice
1 teaspoon coarse salt
1 teaspoon black pepper
2 tablespoons balsamic vinegar
1 teaspoon chopped fresh rosemary
 

Preparation:

Heat a clean griddle and brush with 1/2 of the oil. Brush onion slices lightly with remaining oil on both sides, season with salt and pepper and place on griddle. Grill for 3 to 5 minutes on each side, or until softened and lightly charred. Transfer onions to a bowl, drizzle with vinegar and sprinkle with rosemary. Toss to separate rings and season with more salt an pepper as needed.