Lentil Stuffed Peppers with Quinoa

Lentil stuffed peppers with quinoa are one of those meals that make me feel like I’m winning at healthy eating without sacrificing flavor. I still remember the first time I made these for my family Henry was skeptical about a meatless dinner, but after one bite, he was hooked. Isabella and Emma even asked for seconds, which rarely happens with veggie-forward meals. Noah, my pickiest eater, surprised me by devouring his entire pepper without complaint.

These stuffed bell peppers are packed with protein from lentils and quinoa, making them incredibly satisfying. The combination of earthy mushrooms, savory marinara, and a hint of liquid smoke creates a depth of flavor that rivals any meat-based version. Plus, they’re naturally vegan and gluten free, so they work for just about any dietary preference.

What I love most about this recipe is how flexible it is. You can prep everything ahead of time, customize the filling to your liking, and even freeze leftovers for busy weeknights. Trust me, once you try these easy stuffed bell peppers, you’ll be making them on repeat.

Why You’ll Love This Lentil Stuffed Peppers Recipe

• High in protein and fiber: Lentils and quinoa pack a nutritious punch that keeps you full for hours
• Naturally vegan and gluten free: Perfect for various dietary needs without any substitutions
• Make-ahead friendly: Assemble up to 24 hours in advance and bake when you’re ready
• Budget-friendly: Uses affordable pantry staples and seasonal bell peppers
• Kid-approved: Even picky eaters love the familiar flavors and fun presentation
• Freezer-friendly: Make a double batch and freeze for easy future meals

Ingredients You’ll Need for Quinoa Stuffed Peppers

For the peppers:

• 6 medium bell peppers (any color I like using a mix for visual appeal)

For the filling:

• 2 teaspoons olive oil (for sautéing)
• 1 medium onion, diced
• 2 cloves garlic, minced
• 8 oz white mushrooms, diced small (they add amazing umami flavor)
• ½ teaspoon liquid smoke (this is the secret ingredient that adds depth)
• 1 cup cooked brown or green lentils (cook according to package directions)
• 1 cup cooked quinoa (any color works great)
• 2 cups marinara sauce, divided (homemade or your favorite low-sodium brand)

Pro tip: I always cook extra lentils and quinoa at the beginning of the week for easy meal prep. They keep well in the fridge for up to 5 days.

How to Make Vegan Stuffed Bell Peppers with Lentils

Step 1: Prep your grains and sauce

If you haven’t already, cook your lentils and quinoa according to package directions. I usually do this while prepping the other ingredients. If you’re making homemade marinara, get that going too.

Step 2: Preheat and prepare

Preheat your oven to 350°F. This lower temperature cooks the peppers perfectly without burning the filling.

Step 3: Sauté the aromatics

Heat 2 teaspoons of olive oil in a large skillet over medium heat. Add the diced onions and minced garlic, sautéing until they become translucent and fragrant (about 3-4 minutes). This builds the flavor foundation for your filling.

Step 4: Cook the mushrooms

Add the diced mushrooms to the pan and continue cooking. The mushrooms will release their liquid—keep cooking until most of it evaporates. This concentrates the mushroom flavor beautifully.

Step 5: Combine the filling

Stir in the liquid smoke, cooked lentils, cooked quinoa, and 1 cup of marinara sauce. Mix everything together and warm it through. Taste and adjust seasoning if needed (I sometimes add a pinch of salt and black pepper).

Step 6: Prepare the bell peppers

Cut the tops off each pepper and scoop out the seeds and membranes. Arrange them in a 9×13-inch baking dish. If your peppers won’t stand upright, slice a tiny bit off the bottom to create a flat base. Just be careful not to cut through to the inside. Spray a bit of oil in the bottom of the dish if you’re worried about sticking.

Step 7: Stuff and sauce

Scoop the filling into each prepared pepper, dividing evenly. You should have a generous mound in each one. Spoon some of the remaining marinara sauce on top of each stuffed pepper.

Step 8: Bake covered

Cover the baking dish with a lid or aluminum foil and bake for 30 minutes. This steams the peppers and makes them tender.

Step 9: Finish uncovered

Remove the cover and bake for another 15-20 minutes until the sauce is bubbly and the peppers are fork-tender. The tops will get slightly caramelized, which adds great flavor.

Step 10: Serve hot

Let the peppers cool for about 5 minutes before serving. Spoon the remaining marinara sauce over the top or serve it on the side for dipping.

Storage and Reheating Tips for Plant Based Stuffed Peppers

Refrigerator storage: Store leftover lentil stuffed peppers in an airtight container in the fridge for up to 4 days. The flavors actually get better after a day or two as everything melds together.

Freezing instructions: These freeze beautifully. Let them cool completely, then wrap each pepper individually in plastic wrap and place in a freezer-safe container. They’ll keep for up to 3 months. Simply put, frozen stuffed peppers are a lifesaver on busy nights.

Reheating: For refrigerated peppers, microwave for 2-3 minutes or reheat in a 350°F oven for 15-20 minutes. For frozen peppers, thaw overnight in the fridge, then reheat as you would refrigerated ones. You can also reheat from frozen just add an extra 10 minutes to the baking time.

Lentil Stuffed Peppers with Quinoa FAQs

Conclusion

These lentil stuffed peppers with quinoa have become a staple in our dinner rotation, and I think they’ll become one of yours too. They’re wholesome, satisfying, and so much easier than they look. The combination of plant based protein, vegetables, and whole grains makes this a complete meal that doesn’t need anything else on the side (though a simple salad never hurts).

Can’t wait to hear how you all like this recipe. Be sure to tag me on Instagram when you make these vegan stuffed bell peppers I love seeing your creations.

Recipes You May Like

If you loved these lentil stuffed peppers, you’ll definitely want to try my stuffed pepper soup recipe it has all the same flavors in a cozy, comforting bowl. My best vegan lasagna soup is another hearty, plant-based dinner that my family requests weekly. And for another protein-packed vegetarian meal, check out my one pot red lentil pasta recipe it’s ready in under 30 minutes.

Happy cooking

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