This Slow Cooker Dump Swedish Meatball Dinner is an easy, comforting meal made with frozen homestyle or Italian meatballs simmered in a rich, creamy mushroom gravy. Beef broth and brown gravy mix add savory flavor, while sour cream stirred in at the end gives the sauce its classic creamy finish. With just a handful of ingredients and minimal prep, this crockpot dinner is perfect for busy weeknights. Serve it over egg noodles, mashed potatoes, or rice for a satisfying meal.