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!

I small head of cauliflower, chopped into very small pieces
6 Tbsp olive oil, divided
Salt and pepper
¾ cup dry quinoa
1½ cups vegetable stock
2 tsp fresh parsley, minced
2 tsp fresh thyme leaves
1 cup panko breadcrumbs
1 egg
3 Tbsp butter
1 sweet onion, thinly sliced
16-20 cremini mushrooms, sliced
3 cloves garlic, minced
5 large slices aged havarti cheese
5 burger buns
Arugula and mayonnaise for serving (optional)

View the full recipe at Rhubarbarians →