2 zucchini, sliced 1/4" rounds
2 tomatoes, sliced
1/2 c. chopped onions
1 oz. cheddar, grated
1 oz. Mozzarella, grated

Place zucchini in bottom of skillet. Top with tomatoes and onion. Cover; cook over low heat until zucchini is medium tender. Top veggies with cheeses and finish cooking, uncovered until cheese is melted. 225 calories. One serving.