Name: Cauliflower Quinoa Burgers with Mushrooms and Onions
Prep time: 20 min
Cook time: PT-487723H30M45S
Total time: PT-487723H30M45S
Cuisine: Vegetarian
Ingredients: 1 small head cauliflower, chopped into small florets; 6 tablespoons olive oil, divided; Salt and pepper, to taste; ¾ cup dry quinoa; 1½ cups vegetable stock; 2 teaspoons minced fresh parsley; 2 teaspoons fresh thyme leaves; 1 cup panko breadcrumbs; 1 large egg; 3 tablespoons butter; 1 medium sweet onion, peeled and sliced into ¾” 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 (optional)

Why You’ll Love This Recipe

These burgers are packed with vegetables, protein, and flavor, making them both nutritious and indulgent. The combination of cauliflower, quinoa, and fresh herbs creates a tender, flavorful patty that holds together beautifully. Adding sautéed mushrooms and onions enhances the umami, while melted Havarti or Swiss cheese gives a creamy, melty finish. Perfect for vegetarian or flexitarian meals, they’re a hit for the whole family.

Ingredients

(Tip: Full measurements are listed in the recipe card below.)

For the Burgers:

1 small head cauliflower, chopped into small florets
6 tablespoons olive oil, divided
Salt and pepper, to taste
¾ cup dry quinoa
1½ cups vegetable stock
2 teaspoons minced fresh parsley
2 teaspoons fresh thyme leaves
1 cup panko breadcrumbs
1 large egg

For the Topping:

3 tablespoons butter
1 medium sweet onion, peeled and sliced into ¾” slices
16–20 medium cremini mushrooms, sliced
3 medium cloves garlic, minced

For Assembly:

5 large slices aged Havarti or Swiss cheese
5 burger buns, toasted if desired
Arugula and mayonnaise (optional)

Directions

Preheat oven to 400°F (200°C). Toss cauliflower florets with 3 tablespoons olive oil, salt, and pepper. Roast for 20–25 minutes, until tender and lightly golden.
Meanwhile, cook quinoa in vegetable stock according to package instructions. Once cooked, fluff with a fork and allow to cool slightly.
In a large bowl, combine roasted cauliflower, cooked quinoa, parsley, thyme, panko breadcrumbs, egg, and a pinch of salt and pepper. Mix until well combined and shape into 5 patties.
Heat remaining 3 tablespoons olive oil in a large skillet over medium heat. Cook patties for 3–4 minutes per side until golden brown. Remove and set aside.
In the same skillet, melt butter. Add onion slices and sauté for 5–7 minutes until soft and caramelized. Add mushrooms and garlic and cook for another 3–4 minutes until mushrooms are tender.
Top each burger patty with a slice of cheese and allow to melt slightly.
Assemble burgers on buns with arugula and mayonnaise, then layer with sautéed mushrooms and onions. Serve immediately.

Servings and Timing

This recipe makes 5 burgers.
Preparation time: 20 minutes
Cooking time: 25–30 minutes
Total time: 45–50 minutes

Variations

Use gluten-free breadcrumbs to make the burgers gluten-free.
Swap Havarti or Swiss with cheddar, mozzarella, or vegan cheese for a dairy-free option.
Add roasted red peppers or avocado slices for extra flavor.
Mix in finely chopped spinach or kale into the burger mixture for extra greens.
Serve with a side of sweet potato fries or a crisp salad for a complete meal.

Storage/Reheating

Store leftover patties in an airtight container in the refrigerator for up to 2 days. Reheat in a skillet over medium heat or in the oven until warmed through.

FAQs

Can I make these burgers ahead of time?

Yes, form the patties and store in the fridge for up to 24 hours before cooking.

Can I freeze the patties?

Yes, freeze uncooked patties on a baking sheet for 1–2 hours, then transfer to a freezer-safe bag for up to 2 months. Thaw before cooking.

Can I make these vegan?

Yes, omit the egg and cheese, and use a flax egg or vegan cheese alternative.

Can I grill these burgers?

Absolutely! Grill patties over medium heat for 3–4 minutes per side until heated through.

Conclusion

Cauliflower Quinoa Burgers with Mushrooms and Onions are a wholesome, flavorful, and satisfying vegetarian option for any meal. Packed with vegetables, herbs, and umami-rich toppings, these burgers are both nutritious and indulgent. Perfect for family dinners, meal prep, or a gourmet twist on a classic burger, they are sure to impress.