Bourbon Butter Onions

4 large sweet onions
1 cup melted butter
1/4 cup bourbon
1/4 cup brown sugar
1 tbsp. balsamic vinegar
Garlic salt
Ground black pepper
PAM Grilling Spray

Cut off thin slice of bottom (root end) of sweet Vidalia or Maui or Walla Walla onions so they can stand upright. Remove outer skin and, using a grapefruit knife or melon baller remove a core almost to the bottom of the onion and about 2 inches wide.

Spray outside of onion with PAM grilling spray and salt and pepper the outside of the onion. Place each onion on a large piece of aluminum foil and salt and pepper the inside of the cavities as well.

Mix melted butter, bourbon, brown sugar, and balsamic vinegar in bowl and fill the cavities with the butter mixture. Reserve remaining butter mixture and keep warm.

Gather the foil at the top and carefully twist to seal the onions in the foil. Cook on indirect heat on the barbecue for 1 1/2 hrs.

Just before serving drizzle warm leftover butter mix over onions and serve.