precook zucchini in salt water, saute carrots and onions in butter until tender. Combined veggies, croutons, and soup thinned with milk. Spread in casserole and sprinkle with desired amount of cheese. Bake at 350 for 30 minutes
** I usually buy Brownberry onion and sage croutons (yellowish bag) I also use the whole bag and use the whole can of evaporated milk.
Also, for something different I will cut up 1-2 chicken breasts and cook along and add with the onions & carrots.