Chipotle Black Bean and Corn Stuffed Portabella Mushrooms

olive oil

red onion, diced

bell peppers, diced

garlic cloves, minced

corn (fresh, frozen, or canned)

canned black beans

chipotle peppers in adobo sauce, minced (or salsa)

portabella mushrooms

part skim shredded mozzarella cheese

Salt and pepper