Prepare the slow cooker. Spray the bottom of your slow cooker with nonstick cooking spray.
Blend the ingredients. In a medium-sized mixing bowl, add dry pasta, evaporated milk, chicken broth, cheddar cheese, Colby jack cheese, dry mustard, salt, and pepper. Stir well and pour into the slow cooker.
⭐️ Cook. Cook on low for 1 - 1.5 hours or until pasta is cooked and cheese melted. Gently stir. Over stirring will cause the pasta to become mushy.
