This simple casserole is a delicious way to take advantage of your prolific zucchini and summer squash. Plus, it is relatively light because it doesn't have the heavy sauce most casseroles contain. It's a combination of the two kinds of summer squashyellow and zucchinisliced and then baked to perfection with garlic, butter, breadcrumbs, and grated parmesan cheese. This easy squash bake is an excellent side dish for a summer cookout or everyday dinner. It's a delicious side dish to serve with grilled meat or chicken, or serve it with a fish or seafood meal.