Zucchini, Onions & Tomatoes With Parmesan Cheese

This recipe for Zucchini, Onions & Tomatoes With Parmesan Cheese brings together 3 small zucchini (I also used magda squash) or 3 small squash, of your choice trimmed, cut into 1/4 inch rounds (I also used magda squash), 3 -4 small ripe tomatoes, cut into 1/4 inch slices, 1 medium red onion, thinly sliced in a practical dish for home cooking. It takes about 50 min to prepare and cook. It makes approximately 4 servings.