Breakfast
Freeflourish
Gluten-Free High-Protein Lentil and Walnut Veggie Burgers
By Freeflourish Test KitchenReviewed by Freeflourish Editorial TeamPublished May 9, 2026 · Updated May 11, 2026
American-inspired
35 mins
glutenfreehighproteinvegetarianfamilyfriendlymaincourseeasymealprepquickrecipeshealthy
These gluten-free lentil and walnut veggie burgers are a protein-rich vegetarian main course, ideal for lunch, easy dinners, and meal prep. Family-friendly and flavorful.
Prep
20 min
Cook
15 min
Total
35 min
Servings
6
Difficulty
easy
Cuisine
American-inspired
Ingredients
Servings
6
- 1 cup dried brown or green lentils, rinsed
- 2 1/2 cups water or vegetable broth
- 1 cup finely chopped yellow onion
- 2 cloves garlic, minced
- 1 cup finely grated carrot
- 1/2 cup finely chopped celery
- 1/2 cup finely chopped walnuts
- 1/4 cup ground flaxseeds
- 3 tablespoons gluten-free oat flour or almond flour
- 2 tablespoons gluten-free tamari or soy sauce
- 1 teaspoon smoked paprika
- 1 teaspoon ground cumin
- 1/2 teaspoon black pepper
- 1/2 teaspoon salt, or to taste
- 2 tablespoons olive oil or avocado oil (for cooking)
- gluten-free burger buns or lettuce wraps, tomato slices, avocado, mustard, or your favorite condiments
Instructions
-
Place lentils and water or vegetable broth in a medium saucepan and bring to a boil. Reduce heat to low, cover, and simmer for 20-25 minutes until lentils are tender but not mushy. Drain excess liquid and let cool slightly.
-
While lentils cook, heat 1 tablespoon olive oil in a skillet over medium heat. Sauté onion, garlic, carrot, and celery for 5-7 minutes until soft and fragrant. Set aside to cool.
-
In a large bowl, lightly mash cooked lentils with a fork, leaving some texture.
-
Add sautéed vegetables, walnuts, ground flaxseeds, oat or almond flour, tamari, smoked paprika, cumin, pepper, and salt. Mix until combined and the mixture binds well. Add more flour if too wet.
-
Cover and refrigerate for at least 30 minutes to firm up for shaping.
-
Divide mixture into 6 equal portions and form into 3/4-inch thick patties.
-
Heat remaining 1 tablespoon oil in a non-stick skillet over medium heat. Cook patties 4-5 minutes per side until golden brown and heated through, flipping carefully.
-
Serve warm on gluten-free buns or lettuce wraps with your preferred toppings and condiments.
-
Store leftovers in airtight container in refrigerator up to 4 days or freeze patties individually for up to 3 months.
Frequently Asked Questions
Reader questions and answers for this recipe will appear here.
This gluten-free high-protein lentil and walnut veggie burger recipe is versatile and adapts easily to various dietary needs or ingredient availability:
- Lentils: Swap with cooked black beans or chickpeas for an alternative plant-based protein.
- Walnuts: For nut-free versions, replace walnuts with pumpkin seeds or sunflower seeds. Pecan or almond options also work well.
- Gluten-Free Flours: Use coconut or cassava flour for grain-free or paleo-friendly variations. Reduce quantities as these absorb more moisture.
- Tamari or Soy Sauce: Substitute coconut aminos for a soy-free or low-sodium option, ensuring gluten-free certification.
- Ground Flaxseeds: Chia or hemp seeds can maintain binding and nutritional profile.
- Cooking Oils: Neutral oils such as grapeseed or refined coconut oil can replace olive or avocado oil as desired.
Customize toppings and buns to your family’s preferences—lettuce wraps for grain-free, vegan mayonnaise for dairy-free—and enjoy a flexible, nutritious main course.
Allergen Overlap Note
Our gluten-free recipes on Freeflourish are carefully crafted to eliminate gluten-containing ingredients, ideal for gluten intolerance or celiac disease. However, be mindful of possible cross-contamination in home or commercial kitchens.
Many gluten-free recipes may contain common allergens like nuts (e.g., walnuts), soy, or dairy. Tags such as nutfree or dairyfree help identify allergen-free options, but double-check all ingredient labels to suit personal allergies. Recipes categorized under Gluten-Free Baking, Family-Friendly, or Holiday & Seasonal may require extra attention.
To ensure safe gluten-free cooking, use separate utensils and preparation areas to prevent cross-contact. Always verify packaged products for gluten-free certification, as manufacturing practices can change.
For other dietary preferences like vegan, vegetarian, lowcarb, or paleo, filter recipes by relevant tags and categories. Consult healthcare professionals if uncertain about allergens.
Following these guidelines allows you to confidently enjoy our delicious gluten-free recipes, including breakfasts, lunches, dinners, snacks, desserts, and baking treats.
Texture Expectations
Gluten-free lentil and walnut veggie burgers offer a satisfying texture distinct from traditional wheat-based burgers. The lightly mashed lentils provide a hearty, slightly coarse base, while chopped walnuts add a crunchy contrast that enhances each bite.
Using gluten-free oat or almond flour ensures a tender but firm patty structure, which can crumble gently if handled excessively. Chilling the mixture before cooking improves binding and helps patties hold their shape when frying.
Cooked patties develop a golden-brown, slightly crispy crust with a moist, dense center from the lentils and vegetables. This texture balance makes the burgers filling yet not heavy, perfect for family-friendly meals.
Variations in gluten-free flour types or vegetable moisture may affect firmness. If the mixture is too loose, adding extra gluten-free flour will help. Adjust cooking times as needed to avoid dryness while ensuring thorough cooking.
Overall, these burgers are a nutritious, protein-rich, and texturally delightful gluten-free option for lunch, dinner, or meal prep.
Dining With Non Gf Family Note
When preparing gluten-free meals alongside family members who eat gluten, preventing cross-contamination is crucial to keep everyone safe. Whether making Gluten-Free Baking goods, quick Family-Friendly lunches, or hearty Dinner dishes, follow these tips:
- Separate Prep Areas: Use dedicated cutting boards, utensils, and serving dishes for gluten-free foods. Thoroughly clean shared surfaces before use.
- Separate Cooking Equipment: Employ separate pots, pans, toasters, and fryers when possible, or clean thoroughly before cooking gluten-free items like Soups & Salads or Snacks.
- Label and Store Separately: Store gluten-free foods sealed and clearly labeled to avoid contamination, especially during meal prep or freezing.
- Read Labels Carefully: Always verify that ingredients are gluten-free, paying close attention to sauces and condiments commonly used in Holiday & Seasonal or comfort food recipes.
- Educate Family: Make sure everyone understands gluten-free practices for better cooperation in the kitchen.
- Clean Hands and Surfaces: Wash hands before handling gluten-free food and wipe down all preparation surfaces before cooking or eating.
Implementing these practices ensures you can enjoy a variety of gluten-free recipes—from Quick & Easy meals to beloved Holiday Classic dishes—while protecting your family's health.
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