How can I increase the protein?

Add a little more lentil or pair the recipe with a compatible high-protein side such as Greek yogurt, eggs, tofu, beans, or lean meat depending on the recipe style.

Can I make it lighter?

Use measured oil, lighter dairy or sauce options, and a larger vegetable portion while keeping the main protein amount steady.

What should I watch when swapping ingredients?

Keep moisture, salt, and cooking time in mind because high-protein swaps can dry out or firm up faster than the original ingredient.

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Vegan

Vegan High-Protein Sweet Potato and Lentil Burgers with Creamy Avocado Aioli

Name: Vegan High-Protein Sweet Potato and Lentil Burgers with Creamy Avocado Aioli
Prep time: 15 min
Cook time: 25 min
Total time: 40 min
Yield: 6 servings
Cuisine: Fusion
Ingredients: 1 cup dried brown or green lentils, rinsed and drained; 2 medium sweet potatoes, peeled and diced (about 2 cups); 1 small yellow onion, finely chopped; 2 cloves garlic, minced; 1/2 cup rolled oats; 1/4 cup ground flaxseed; 1 tbsp ground cumin; 1 tsp smoked paprika; 1/2 tsp chili powder; 1/2 tsp salt; 1/4 tsp black pepper; 2 tbsp fresh cilantro, chopped (optional); 2 tbsp olive oil (for cooking); 6 whole-grain or gluten-free burger buns (optional, for serving); Leaves of lettuce and tomato slices (optional, for serving); 1 ripe avocado; 1/4 cup unsweetened plant-based yogurt (e.g., coconut or soy); 1 tbsp fresh lemon juice; 1 tsp Dijon mustard; 1 garlic clove, minced; Salt and pepper to taste; Water to thin if needed

By Powerproteinplates Editorial TeamPublished May 1, 2026 | Updated Jul 22, 2026

Fusion 40 mins high-proteinveganeasy-recipesbalancedwhole-foodssnack-ideasmeal-prep-friendlykid-friendly

Protein-packed vegan sweet potato and lentil burgers with a creamy avocado aioli, perfect for healthy snacks, family meals, and meal prep. These wholesome burgers offer fiber and essential nutrients in a delicious, kid-friendly recipe suitable for balanced, plant-based diets.

Vegan High-Protein Sweet Potato and Lentil Burgers with Creamy Avocado Aioli

Prep 15 min

Cook 25 min

Total 40 min

Servings 6

Difficulty easy

Cuisine Fusion

Ingredients

Servings 6

1 cup dried brown or green lentils, rinsed and drained
2 medium sweet potatoes, peeled and diced (about 2 cups)
1 small yellow onion, finely chopped
2 cloves garlic, minced
1/2 cup rolled oats
1/4 cup ground flaxseed
1 tbsp ground cumin
1 tsp smoked paprika
1/2 tsp chili powder
1/2 tsp salt
1/4 tsp black pepper
2 tbsp fresh cilantro, chopped (optional)
2 tbsp olive oil (for cooking)
6 whole-grain or gluten-free burger buns (optional, for serving)
Leaves of lettuce and tomato slices (optional, for serving)
1 ripe avocado
1/4 cup unsweetened plant-based yogurt (e.g., coconut or soy)
1 tbsp fresh lemon juice
1 tsp Dijon mustard
1 garlic clove, minced
Salt and pepper to taste
Water to thin if needed

Powerproteinplates Vegan High-Protein Sweet Potato and Lentil Burgers with Creamy Avocado Aioli ingredients image

Instructions

Rinse lentils thoroughly and place in a medium pot with 2 1/2 cups water. Bring to a boil, then reduce heat and simmer uncovered until lentils are tender but not mushy, about 20-22 minutes. Drain any excess water and set aside to cool slightly.
Meanwhile, steam or boil the diced sweet potatoes until very tender, about 10-12 minutes. Drain and mash until smooth.
In a large mixing bowl, combine cooked lentils, mashed sweet potatoes, onion, garlic, rolled oats, ground flaxseed, cumin, smoked paprika, chili powder, salt, pepper, and chopped cilantro if using.
Mix thoroughly. Let the mixture rest for 5 minutes to allow oats and flaxseed to absorb moisture and help bind the patties.
Shape the mixture into 6 evenly sized patties about 3/4 inch thick. If the mixture feels too sticky, wet your hands slightly or add extra oats to facilitate shaping.
Heat olive oil in a large non-stick skillet over medium heat. Cook patties for 5-6 minutes per side, until golden brown and firm. Handle carefully when flipping to prevent breaking.
While burgers cook, prepare the avocado aioli by blending avocado, plant-based yogurt, lemon juice, Dijon mustard, and minced garlic until smooth and creamy. Season with salt and pepper to taste. Add water gradually to reach desired consistency.
Serve burgers on whole-grain or gluten-free buns with lettuce, tomato, and generous avocado aioli. Alternatively, enjoy patties alone as snacks or alongside salads for meal prep.
Store leftover patties and aioli separately in airtight containers in the refrigerator for up to 4 days.

Powerproteinplates Vegan High-Protein Sweet Potato and Lentil Burgers with Creamy Avocado Aioli process and serving image

Tips

Protein Highlight

lentil gives this vegan recipe its main protein focus, while supporting ingredients add texture, fiber, or slow-burning carbohydrates. Keep the protein portion clear on the plate instead of letting sauces, toppings, or starches become the bulk of the meal.

Goal Fit

This recipe fits meal prep, active-week eating, and balanced family meals because it combines familiar ingredients with a fitness-friendly structure. Use it when you want a practical option that can support recovery, satiety, or steady energy without turning the meal into a supplement-style dish.

Protein Density

To keep the protein density strong, measure calorie-dense extras and add more lentil or a compatible high-protein side before increasing the starch or sauce. If you scale the recipe, preserve the ratio between the protein base and the vegetables, grains, or toppings.

Frequently Asked Questions

Can I meal prep Vegan High-Protein Sweet Potato and Lentil Burgers with Creamy Avocado Aioli?: Yes. Portion it into airtight containers and keep toppings, sauces, or crunchy finishes separate when that will protect the texture.
How can I increase the protein?: Add a little more lentil or pair the recipe with a compatible high-protein side such as Greek yogurt, eggs, tofu, beans, or lean meat depending on the recipe style.
Can I make it lighter?: Use measured oil, lighter dairy or sauce options, and a larger vegetable portion while keeping the main protein amount steady.
What should I watch when swapping ingredients?: Keep moisture, salt, and cooking time in mind because high-protein swaps can dry out or firm up faster than the original ingredient.

Ingredient Replacements

dried brown or green lentils, rinsed and drained: Use the closest lean protein or high-protein base that fits the recipe format, and keep the portion similar so the texture and protein balance stay intact.
medium sweet potatoes, peeled and diced: Swap with a similar cooked grain, vegetable, dairy item, or pantry ingredient when needed, adjusting liquid or cooking time if the replacement is wetter or drier.
small yellow onion, finely chopped: Use a related spice, herb, sauce, or aromatic if this ingredient is unavailable, then taste before adding extra salt or heat.
Gluten-free option: Choose certified gluten-free grains, crumbs, sauces, and pantry items when cross-contact matters.
Dairy-free option: Replace yogurt, cheese, kefir, or milk-based ingredients with unsweetened high-protein dairy-free alternatives when they fit the recipe.
Calorie adjustment: Keep oils, sweeteners, nuts, cheese, and creamy sauces measured so the recipe stays aligned with a protein-forward plate.

Storage

Cool Vegan High-Protein Sweet Potato and Lentil Burgers with Creamy Avocado Aioli before storing, refrigerate in airtight containers for up to 4 days, keep crisp toppings or fresh garnishes separate when useful, freeze only if the main ingredients tolerate thawing well, and reheat gently with a splash of liquid or a short oven, skillet, microwave, or air-fryer warm-up that matches the recipe texture.

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Vegan High-Protein Sweet Potato and Lentil Burgers with Creamy Avocado Aioli

Recipe Details

Ingredients

Instructions