Squash Casserole

Ingredients

• 2 medium zucchini, sliced
• 1 yellow squash, sliced
• 1 medium tomato, sliced
• 2 1/2 Tbsp. lo-cal margarine
• 1 Tbsp. Parmesan cheese
• 1/2 tsp. basil
• 1/2 tsp. grated lemon peel
• salt and pepper to taste