Preparation Steps

• Preheat oven to 375°F (190°C).
• In a large bowl, combine the sliced yellow squash, chopped onion, and shredded cheddar cheese.
• In a separate small bowl, whisk together the melted butter, sour cream, and milk until well combined.
• Pour the butter mixture over the squash mixture and stir gently to coat everything evenly. Season with salt and pepper to taste.
• Transfer the mixture to a greased 8x8 inch baking dish.
• Sprinkle the crushed cracker crumbs evenly over the top of the casserole.
• Bake for 40-45 minutes, or until bubbly and the topping is golden brown.
• Let stand for 5-10 minutes before serving.