Add white, pinto, light red kidney, black beans, ketchup, light brown sugar, yellow mustard, apple cider vinegar, water, Worcestershire sauce and bacon to slow cooker.
Give it a couple of quick stirs and then cook on low for 2-3 hours.
If you've tried this recipe, come back and let us know how it was!
You can also make slow cooker baked beans with dry beans instead of canned. On this date I didn't have the time to start with dry beans, however you can modify the recipe. Start with 2 cups of each type of dry beans. Put them all in a large bowl, cover with water and set in the fridge for 6-8 hours. Pick up where the recipe starts off for the same results!