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+ servings

Mushroom Walnut Sliders

Walnuts and mushrooms are a perfect combination for a healthy and meaty vegan burger patty! They both have a savory yet earthy flavor profile that work with tons of different burger toppings. 
Prep Time: 15 minutes
Cook Time: 25 minutes
Total Time: 40 minutes
Course: Main Course
Cuisine: American, Vegan
Keyword: gluten-free
Servings: 4 servings
Calories: 285kcal


  • 2 tbsp olive oil
  • 1 cup onion minced
  • 2 cloves garlic minced
  • 16 oz mushrooms brown button
  • 1 tbsp flax, ground plus 3 tbsp water
  • 1/2 cup walnuts pulverized in a food processor
  • 2 tsp miso
  • 1 tsp sea salt
  • 1/2 tsp thyme, dried
  • 1 tbsp tamari gluten free
  • 1 cup walnut protein powder (I used Octonuts Walnut Protein Powder)
  • black pepper to taste


  • Preheat your oven to 350°F.
    Heat the olive oil in a large non-stick skillet. Add the onion, garlic and chopped mushrooms. Sauté for 5-7 minutes over low heat or until the mushrooms are tender and the onions are golden. 
  • Mix the ground flax with the warm water and allow it to sit for 5-10 mins to thicken up. Add the ground flax to a medium mixing bowl and then add the cooked mushrooms, walnut, miso, sea salt, dried thyme, tamari and protein powder. Mix until everything is very well combined 
  • Form the mixture into patties about 1/2” thick and 2 1/2” in diameter. Place the formed patties onto a sheet pan that’s lined with parchment paper. Place the sheet pan and bake for 25 mins in the oven. Flip the patties halfway through the cooking time.
  • When the patties are done cooking remove them from the oven and allow them to cool for 5-10 mins before handling. Build your burgers on GF slider buns (or regular buns) and top with ketchup, mustard, lettuce, tomato, onion and pickles. 


Serving: 1patty | Calories: 285kcal | Carbohydrates: 14.3g | Protein: 10.8g | Fat: 22.3g | Saturated Fat: 2.1g | Sodium: 835mg | Potassium: 692mg | Fiber: 5.1g | Sugar: 3.9g | Calcium: 79mg | Iron: 2mg
Tried this recipe?Let us know how it was!