Delicious Cheesy Zucchini Casserole Recipe

Ingredients

• 4 cups sliced zucchini
• 1/2 cup chopped onion
• 1/4 cup butter
• 2 eggs
• 1 cup shredded cheddar cheese
• 1 cup shredded mozzarella cheese
• 1/2 cup sour cream
• 1/2 cup mayonnaise
• 1/2 teaspoon garlic powder
• 1/2 teaspoon salt
• 1/2 teaspoon pepper
• 1/4 cup grated parmesan cheese