Ham and Potato Casserole - Grit

Ingredients

• 2 pounds potatoes, cubed and boiled
• 3⁄4 cup butter, melted, divided
• 1 teaspoon salt
• 1⁄4 teaspoon black pepper
• 1⁄2 cup chopped onion
• 1 can (10-3⁄4 ounces) cream of mushroom soup
• 1 container (16 ounces) sour cream
• 2 cups shredded cheddar cheese, divided
• 1-1⁄2 cups cooked, diced ham
• 2 cups coarse breadcrumbs