Sloppy Joe Lentils (Slow Cooker or Crock Pot)

This is a semi-homade version inspired by the other sloppy joe lentil recipes here (thanks, guys!). This is for the 5-6 qt. slow cooker too. Hubby tried it and liked even though he's a carnivore. I made this one afternoon and froze half of the batch for another time. With a 6 qt. slow cooker, you can probably double the recipe easily (I ended up adding extra lentils to the recipe because I used too much water at first...ended up with 1.5lb. lentils and I still had plenty of room in my crock pot).