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Cauliflower quinoa burgers with mushrooms and onions! A flavor packed veggie burger topped with buttery, garlicky sauteed mushrooms and onions. This will become your new favorite veggie burger recipe! So good!

Cauliflower quinoa burgers with mushrooms and onions

These delicious cauliflower quinoa burgers will become your new favorite veggie burger! Packed with flavor and topped with buttery, garlicky sauteed mushrooms and onions. YUM!

Prep Time 15 minutes
Cook Time 30 minutes
Total Time 45 minutes
Servings 5 burgers
Calories 531 kcal


  • 1 small head cauliflower, chopped into small florets
  • 6 Tbsp olive oil, divided
  • salt and pepper
  • 3/4 cup dry quinoa
  • 1 1/2 cups vegetable stock
  • 2 tsp minced fresh parsley
  • 2 tsp fresh thyme leaves
  • 1 cup panko breadcrumbs
  • 1 large egg
  • 3 Tbsp butter
  • 1 medium sweet onion, peeled and sliced into 3/4" slices
  • 16-20 medium cremini mushrooms, sliced
  • 3 medium cloves garlic, minced
  • 5 large slices aged havarti or swiss cheese
  • 5 burger buns (toasted if desired)
  • arugula and mayonnaise for serving (optional)


  1. Preheat oven to 425 degrees F. Make sure all of your ingredients are prepped, things will move quickly once cooking begins. Line a baking sheet with parchment paper, optional for easy clean up.

  2. Toss the cauliflower in 2 Tbsp of the olive oil and season with salt and pepper. Spread out on the baking sheet and bake for 15-20 minutes or until browned and beginning to char. Let cool slightly.

  3. Meanwhile, combine the quinoa and the veggie stock in a small saucepan with fitted lid. Bring to a boil. Reduce heat to low, cover, and simmer 15 minutes, or until liquid is absorbed. Let cool slightly.

  4. Meanwhile, melt the butter in a cast iron skillet over medium heat. Add the onion and saute until starting to brown, about 4-5 minutes. Add the mushrooms and garlic, and saute until soft, about 6-8 minutes. Remove from skillet, set aside.  

  5. In a large bowl, combine the quinoa with the cauliflower. Add the parsley, thyme, and panko and stir or mix with your hands. Season very generously with salt and pepper to taste. Add the egg and mix until evenly combined. Form 5 round balls with your hands. Make sure to squeeze any moisture out of the balls and make sure that they are intact and holding together. If not, add a bit more panko. Carefully form patties out of the balls, keeping the mixture squeezed together.

  6. Heat the remaining olive oil in the same skillet over medium high heat. Add the burgers and cook until fully browned on the bottom, about 5 minutes. Carefully flip the burgers. Top the burgers with the cheese, cover, and cook until browned and cheese is melted, about 5-8 minutes.

  7. To serve, place burger patties on the bottom burger buns. Evenly distribute mushroom mixture. Top with fresh arugula, mayonnaise or other toppings of your choice. Top with burger bun tops. Enjoy!

Nutrition Facts
Cauliflower quinoa burgers with mushrooms and onions
Amount Per Serving
Calories 531 Calories from Fat 261
% Daily Value*
Fat 29g45%
Saturated Fat 8g40%
Cholesterol 61mg20%
Sodium 690mg29%
Potassium 618mg18%
Carbohydrates 54g18%
Fiber 5g20%
Sugar 7g8%
Protein 14g28%
Vitamin A 440IU9%
Vitamin C 30mg36%
Calcium 143mg14%
Iron 4.1mg23%
* Percent Daily Values are based on a 2000 calorie diet.