Southwest Frittata!

1 T. olive oil
1 onion, diced
3 small potatoes, diced
1/2 c. black beans
15 oz. fire roasted tomatoes with chiles
4 eggs + 4 egg whites
1 t. black pepper
1/2 c. cheddar cheese, shredded
1 avocado, mashed
cilantro

Saute onion and potatoes in olive oil until soft.  Stir in black beans and tomatoes.  In a separate bowl, beat eggs and egg whites.  Add vegetable mixture and stir.  Spray a large skillet with more olive oil and pour in the egg and vegetable mixture.  Top with black pepper and shredded cheddar.  Cover and cook until the edges are set, then uncover and broil in the oven for 10 minutes or until the eggs are set in the center.  Top with avocado and cilantro.