3 tbsp. olive oil
1/2 c. sliced onion
2 c. thinly sliced zucchini
1 tsp. dried oregano
1 tomato, chopped
2 stalks celery, chopped
1/2 c. provolone cheese
1 lb. orange roughy (4 pieces)

Heat oil in large skillet. Add onion, zucchini, celery and oregano; saute over medium-high heat, stirring often, 4 minutes. Put tomato and fish over vegetables. Sprinkle fish with salt and pepper. Cover skillet, reduce heat and simmer until fish is opaque and flakes easily with a fork, about 9 minutes. Uncover skillet and sprinkle fish with cheese. Cover skillet until cheese melts, about 1 1/2 minutes. Serve immediately.