Ultra Creamy Slow Cooker Mac and Cheese (Three Cheeses) The ultimate comfort food — rich, silky, and unbelievably cheesy. This Slow Cooker Mac and Cheese combines three kinds of cheese for maximum flavor and creaminess. No boiling or baking required — just pure, melt-in-your-mouth perfection. Ingredients: 16 oz elbow macaroni (uncooked) 4 cups shredded cheese blend (1½ cups sharp cheddar, 1½ cups mozzarella, 1 cup American or Monterey Jack) 3 cups milk 1 cup heavy cream 1/2 cup cream cheese, cub