A comforting and easy-to-make slow cooker meatball casserole, combining savory meatballs, pasta, cheese, and marinara sauce for a hearty meal.

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In a large bowl, mix ground beef, breadcrumbs, Parmesan cheese, parsley, egg, salt, and pepper. Form into meatballs (about 1-inch in diameter).
Place the meatballs in the slow cooker.
Pour marinara sauce over the meatballs, and add the Italian seasoning and water. Stir gently to combine.
Top with uncooked pasta, then sprinkle the mozzarella and cheddar cheese over the top.
Cover and cook on low for 4-5 hours, or until the meatballs are cooked through and the pasta is tender.
Serve hot and enjoy your slow cooker meatball casserole!

For a gluten-free version, use gluten-free breadcrumbs and pasta.
You can add vegetables like bell peppers or mushrooms for extra flavor and nutrition.
If you prefer a crispy cheese topping, uncover the slow cooker in the last 30 minutes of cooking.