- Heat oil in a large skillet. Add onion, garlic and green pepper and cook until soft.
- Pour in spaghetti sauce and lentils and stir to incorporate. Add maple syrup, chili powder, Worcestershire sauce, paprika, salt and pepper and stir to combine. Cook, simmering, for 15 minutes.
- Remove from heat. Scoop lentil mixture onto hamburger buns and top with pickles and pickled onions.
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