Vegetarian-friendly recipe for lentil Sloppy Joes, great for piling on buns.
Combine onion and both bell peppers in the bowl of a food processor; pulse until blended into a uniform size but not liquid.
Heat olive oil in a large pot over medium-high heat. Add onion-bell pepper mixture, carrot, and zucchini. Cook and stir until soft and heated through, 6 to 8 minutes.
Add broth and lentils; bring to a boil. Reduce heat and simmer, uncovered and stirring occasionally, until lentils are tender, about 15 minutes.
Stir in tomatoes, chili powder, mustard, vinegar, maple syrup, tomato paste, Worcestershire sauce, salt, and pepper; bring to a boil. Reduce heat and simmer until thickened, about 10 minutes. Serve on buns.
Per Serving: 449 calories; protein 17.9g; carbohydrates 76.3g; fat 7.7g; sodium 847.4mg.