In a skillet over medium heat, add the olive oil. Sauté the chopped onion and garlic until translucent. Add the chopped mushrooms and cook until they release their moisture and start to brown.

Combine Ingredients

In a large bowl, mix the cooked brown rice, sautéed mushroom mixture, chopped almonds, breadcrumbs, salt, and pepper. Form the mixture into patties.

Cook the Patties

Heat some olive oil in the skillet and cook the patties for about 4-5 minutes on each side, or until golden brown and heated through.

Miso Dressing Preparation

Mix the Dressing

In a small bowl, whisk together the miso paste, sesame oil, rice vinegar, maple syrup, and water until smooth.

Assembly

Assemble the Burger

On each burger bun, place a patty, top with arugula, and drizzle with miso dressing. Serve immediately.