Sweet & saucy, great for a crowd!
In a pan, cube & cook bacon until partly crisp
Add the bacon to a large crock pot, using a slotted spoon to drain the fat. Add in a few tablespoons of the bacon grease to the crock pot
Dump the beans into the crock pot
Dice the onion & add to the crock pot
In a small bowl, mix together the ketchup, molasses, vinegar, mustard & brown sugar, taste & adjust ingredients according to your taste.
Pour sauce into the crock pot & stir everything to combine
Cover & cook on high for 4 hours
Please note that the ingredients were eye-balled. Adjust according to your taste. Too sweet? Add a bit more ketchup &/or vinegar. Too tart? Add in some more brown sugar.