2 red or yellow onions (~1.25 lbs)
1.5 Tbsp oil
1.5 Tbsp balsamic vinegar
1.5 Tbsp firmly packed brown sugar
1/4 tsp salt
1/4 tsp freshly ground black pepper
You want your grill to be at medium heat.
Slice onions 1/3" thick. In a large bowl, stir together oil, vinegar, sugar, salt & pepper. Add onions and mix well to coat.
If cooking over charcoal, use a grill skillet or basket. If using a gas grill, use a grill sheet or basket. Transfer onions to oiled pan/sheet/basket and reserve oil mixture in bowl. Cook, turning onions several times w/ a wide spatula, until lightly charred and limp -- ~10-15 minutes.
Return onions to bowl and mix to coat w/ reserved oil mixture. Put onions in serving bowl. Serve warm or at room temperature.
Yield: 4 cups