Combine first 6 ingredients in a heavy saucepan over low heat, stirring often, for 15 minutes, or until cheese is melted. Transfer to a bowl, sprinkle with desired toppings and serve warm with Bone Crackers. Makes 6 cups.
Cut flour tortillas with a bone-shaped cookie cutter. Spray "bones" lightly with cooking spray and bake at 350° for 10 minutes.