Do you have an abundance of summer vegetables? If you do...here's a quick answer!

Chop an onion and saute in some olive oil.  Place on the bottom of
a baking dish.  Peel and slice a potato, slice a zucchini, summer squash
and tomato or two.  Season with salt and pepper.  Sprinkle with thyme.
Cover and bake at 375 degrees for 45 minutes. 
Then uncover, sprinkle with shredded cheese of your choice
and bake another 15 minutes or until cheese bubbles.

Easy, pretty to look at, delicious and healthy too!