I love anything in the ratatouille family for zucchini/summer squash. Slice squash onion tomato thinly, make a flavorful mush of more tomatoes with whatever you like, I am big on garlic olive oil and herbs, put glop in dish, arrange slices standing on their sides in alternating colors... The glop will help them stand up. Bake covered till really cooked. Serves one as a main.