-
Preheat oven to 325 °F.
-
Cut the corn from the ears.
-
Cut the ends from the tomatoes and slice.
-
Cut the ends from the zucchini, then slice them in half and then quarters. Slice lengthwise into bite size chunks that cook well (1/2-inch by 2 inches).
-
Slice the onions in thin rings.
-
Layer the vegetables in a casserole dish.
-
Sprinkle with garlic, parsley, lemon juice, salt, and pepper. Turn gently to mix together.
-
Dot the top with small pieces of butter.
-
Cover and bake for 45 minutes.