Portobello Barbecue Melts

4 Portobello caps
Vegetable oil
1 medium onion, sliced
1 pound ground beef, pork or lamb
Salt and pepper to taste
3/4 cup barbecue sauce
4 slices mozzarella or Monterey jack cheese

Preheat the oven to 350 degrees F.

Brush the mushroom caps with oil, place on baking sheet and bake for 2 minutes.

Meanwhile, heat 1 tablespoon oil in medium skillet and sauté the onion for 1 minute. Add the ground meat and cook until the meat is done; drain. Season with salt and pepper to taste. Stir in the barbecue sauce. Remove the caps from the oven and cover with the meat mixture. Cover each with a slice of cheese and return to the oven until cheese melts, about 1 minute. Serve immediately.

Serves 4.