Zucchini parmigiana

3 medium zucchini
1 medium onion, thinly sliced
1 Tbs. salad oil
1/2 to 1 tsp. crushed oregano
8 oz. tomato sauce
8 oz. sliced mozzarella cheese
grated parmesan cheese

1. Cut zucchini in half length-wise.
2. In large skillet, cook onion in hot salad oil until tender, but not brown. Add zucchini halves, cut side up. Sprinkle with salt, pepper, and oregano. Top with tomato sauce and sprinkle with parmesan cheese. Cover and cook just until tender, about 10 minutes.
3. Top zucchini with mozzarella cheese slices, and sprinkle with parmesan cheese. Heat until cheese begins to melt, and serve immediately.