Zucchini, Squash and Corn Casserole Recipe - (4.4/5)

Ingredients

• 1 1/2 pounds yellow squash, cut into 1/4-inch-thick slices
• 1 1/2 pounds zucchini, cut into 1/4-inch-thick slices
• 1/4 cup butter, divided
• 2 cups diced sweet onion $
• 2 garlic cloves, minced
• 3 cups fresh corn kernels $
• 1 1/2 cups (6 oz.) freshly shredded white Cheddar cheese
• 1/2 cup sour cream $
• 1/2 cup mayonnaise $
• 2 large eggs, lightly beaten $
• 2 teaspoons freshly ground black pepper
• 1 teaspoon table salt
• 1 1/2 cups soft, fresh breadcrumbs, divided
• 1 cup freshly grated Asiago cheese, divided