Slow Cooker Ribs Author: Lisa Ingredients 1 cup water 1 cup ketchup 1 (6 ounce) can tomato paste 3/4 cup brown sugar 1/2 cup vinegar 2 tablespoons prepared mustard 1 tablespoon salt 2 pounds ribs Instructions Mix water, ketchup, tomato paste, brown sugar, vinegar, mustard, and salt in a slow cooker, stirring to dissolve brown