Instructions

  1. Heal the oil in a skillet over medium heat; add in the onion and bell pepper; cover, and cook about 5 minutes, until softened.
  2. Add in chili powder, stirring to coat.
  3. Transfer mixture to a slow cooker; add in the lentils, tomatoes, water, tamari, mustard, brown sugar, salt, and pepper; stir to combine.
  4. Cover and cook on LOW for 8 hours.
  5. Serve sloppy-joe style on warmed buns.