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Slow Cooker One-Pot

Slow Cooker Vegan Lentil and Sweet Potato Chili

By PanPotPlates Test KitchenReviewed by PanPotPlates Editorial TeamPublished May 1, 2026 · Updated May 12, 2026
American-Inspired 435 mins slowcookeronepotveganglutenfreedairyfreehealthyeasyfamily-friendlybudget-friendlycomfortfoodmealprephearty

Savor this hearty and comforting slow cooker vegan lentil and sweet potato chili, packed with protein-rich lentils and naturally sweet potatoes, simmered with warming spices and robust tomato flavors. This gluten-free, dairy-free chili is perfect for effortless meal prep, nourishing family dinners, and satisfying cozy comfort food cravings.

Slow Cooker Vegan Lentil and Sweet Potato Chili
Prep 15 min
Cook 420 min
Total 435 min
Servings 6
Difficulty easy
Cuisine American-Inspired

Recipe Details

Prep15 min
Cook420 min
Total435 min
Servings6
Difficultyeasy
CuisineAmerican-Inspired
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Ingredients

Servings 6
  • 1 1/2 cups dried brown or green lentils, rinsed and drained
  • 1 large sweet potato (about 1 pound), peeled and diced into 1/2-inch cubes
  • 1 medium onion, finely chopped
  • 3 cloves garlic, minced
  • 1 red bell pepper, diced
  • 1 (28-ounce) can diced tomatoes, with juice
  • 1 (15-ounce) can tomato sauce
  • 2 cups vegetable broth (gluten-free if needed)
  • 1 tablespoon olive oil
  • 2 teaspoons chili powder
  • 1 teaspoon ground cumin
  • 1/2 teaspoon smoked paprika
  • 1/2 teaspoon dried oregano
  • 1/4 teaspoon cayenne pepper (optional for heat)
  • 1 teaspoon maple syrup or brown sugar
  • Salt and freshly ground black pepper, to taste
  • Fresh lime juice (from 1 lime), for finishing
  • Chopped fresh cilantro, for garnish (optional)

Instructions

  1. In a medium skillet over medium heat, warm the olive oil. Add the chopped onion and cook until softened and translucent, about 5 minutes.
  2. Add the minced garlic and diced red bell pepper to the skillet, cooking for an additional 2 minutes until fragrant. Remove from heat.
  3. In your slow cooker, combine the rinsed lentils, diced sweet potatoes, sautéed onion, garlic, and bell pepper mixture, diced tomatoes with their juice, tomato sauce, and vegetable broth.
  4. Stir in chili powder, ground cumin, smoked paprika, dried oregano, cayenne pepper (if using), maple syrup, salt, and black pepper until all ingredients are evenly combined.
  5. Cover and cook on LOW for 7 to 8 hours or on HIGH for 3 to 4 hours, until the lentils and sweet potatoes are tender and the chili has thickened.
  6. About 15 minutes before serving, taste and adjust the seasoning as needed. Stir in fresh lime juice to brighten the flavors.
  7. Serve hot, garnished with chopped cilantro if desired. This chili pairs wonderfully with cornbread or over cooked rice for a complete meal.

Frequently Asked Questions

Reader questions and answers for this recipe will appear here.

If you need to customize this Slow Cooker Vegan Lentil and Sweet Potato Chili to suit dietary needs or pantry availability, consider these ingredient substitutions:

  • Lentils: Use canned lentils (rinsed) to reduce cooking time or swap with black beans or kidney beans for different texture and flavor.
  • Sweet Potatoes: Substitute with cubed butternut squash or pumpkin for similar natural sweetness and texture.
  • Red Bell Pepper: Replace with any bell pepper color or diced zucchini for variation.
  • Tomatoes: Use crushed tomatoes or tomato puree if diced tomatoes are unavailable.
  • Vegetable Broth: Substitute with water plus extra herbs and spices or alternative gluten-free broths as needed.
  • Maple Syrup or Brown Sugar: Swap for agave nectar or coconut sugar for different natural sweeteners.
  • Olive Oil: Use avocado oil or melted coconut oil as healthy fat alternatives.
  • Spices: Adjust chili powder and cayenne pepper to your preferred heat level or replace smoked paprika with smoked chipotle powder for smoky depth.

These substitutions help maintain the recipe’s vegan, gluten-free, and dairy-free integrity while keeping the meal budget-friendly, hearty, and delicious—perfect for family dinners and meal prep.

Pan Or Pot Required

This recipe is crafted as a Slow Cooker One-Pot meal, perfect for minimal cleanup and easy preparation. You’ll need a slow cooker (crockpot) to gently simmer the lentils, sweet potatoes, and spices together, allowing flavors to meld beautifully over several hours.

Prior to slow cooking, sauté the onions, garlic, and bell peppers in a medium skillet to enhance their flavor and soften the vegetables. This two-step method keeps cookware minimal—just one pan and one pot—and maximizes taste.

Utilizing this approach results in a nourishing, healthy, and comforting vegan chili with very little active cooking time. The slow cooker ensures tender lentils and perfectly softened sweet potatoes with rich, developed flavors.

Pro tip: Choose a slow cooker with at least 5 to 6 quarts capacity to comfortably accommodate all ingredients and ensure even cooking.

Cookware Size Guidance

For best results with this Slow Cooker Vegan Lentil and Sweet Potato Chili, a slow cooker with a capacity of 5 to 6 quarts is recommended. This provides enough space for lentils to expand and for the chili to simmer evenly without spilling.

If you have a smaller slow cooker (3 to 4 quarts), consider halving the recipe to avoid overcrowding and ensure thorough cooking. Conversely, a larger slow cooker (7 quarts or more) may require adjusting liquid amounts or cooking times to maintain a thick, hearty texture, as increased surface area can thin the chili.

For sautéing, a medium skillet about 10 to 12 inches in diameter works well, offering enough room to cook the aromatics evenly without crowding, which helps boost the final flavor profile.

Properly sized cookware ensures your chili cooks perfectly, maximizes flavor development, and simplifies the cooking process.

Cookware Swap Guidance

This robust chili recipe is tailored for slow cooker preparation, offering the convenience of hands-off, low-and-slow cooking that deepens flavors. If you don’t have a slow cooker, here are effective alternatives to achieve similar results:

  • Instant Pot or Electric Pressure Cooker: Use the Pressure Cook setting on high for 25-30 minutes followed by a natural pressure release for fast, flavorful results—ideal for quick, healthy vegan meals.
  • Large Heavy-Bottomed Pot or Dutch Oven: Combine all ingredients and simmer gently on low heat stovetop for 1.5 to 2 hours, stirring occasionally. This stovetop method yields a rich, comforting one-pot chili.
  • Multi-cooker with Slow Cooker Function: Employ its slow-cook mode directly as a convenient substitute preserving the recipe’s hands-off benefits.

Avoid methods like baking sheets, casserole dishes, or skillet-only cooking since even heat and moisture retention are crucial for thoroughly cooking lentils and sweet potatoes while preserving chili texture.

These cookware swaps align with the Slow Cooker One-Pot category and maintain the recipe’s vegan, gluten-free, dairy-free, and comfort food qualities.

Leftovers Quality

This Slow Cooker Vegan Lentil and Sweet Potato Chili stores exceptionally well, making it ideal for meal prep and leftover enjoyment. Stored in an airtight container, it remains fresh in the refrigerator for up to 4-5 days.

For longer-term storage, freeze portions for up to 3 months. Thaw overnight in the fridge before reheating.

To reheat, warm gently on the stovetop over medium-low heat, stirring occasionally, or microwave covered, stirring halfway through. If the chili thickens after cooling, add a splash of vegetable broth or water to restore desired consistency.

Thanks to the hearty lentils, sweet potatoes, and spices, this chili’s flavors deepen after resting, making leftovers even more satisfying for quick family dinners or nutritious weeknight meals.

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