Slow Cooker Method
Prepare the beans on the stove, as directed, but instead of baking them, transfer them to a 6-quart or larger slow cooker. Cook them on low for 3 hours at the most, stirring about halfway through the cooking time. Remember, canned beans are already cooked so you want to avoid cooking them longer than 3 hours in a slow cooker or the texture can become mushy and undesirable.
Refrigerator - Transfer any leftovers to an airtight container and refrigerate promptly. Use leftover Calico Beans within 3 to 4 days for the best quality. For longer storage, see the freezer instructions below.
Freezer - Transfer the cooked and cooled beans to freezer-safe containers and freeze for up to 3 months. Allow frozen beans to thaw safely in the refrigerator before reheating.