Baked Zucchini Zucchini olive oil garlic or garlic powder tomatoes salt and pepper mozzarella and/or parmesan cheese Slice the zucchini in half. Slice off the bottom to keep in stable. Brush with olive oil and top w...ith garlic or garlic powder. Top with sliced tomatoes, salt and pepper to taste. Use mozzarella cheese, Parmesan cheese or mixed blend.. Bake 375 for 20 to 30 minutes until soft.