Vegan Mushroom Quinoa Burger | Cookies and Salt

Ingredients

• 100 g mushrooms
• 1 tbsp olive oil
• 1 yellow onion, finely chopped
• 2 garlic cloves, finely chopped
• 1 tbsp paprika
• 0.5 tbsp ground black pepper
• 2 tbsp tomato paste
• 2 tbsp soy sauce
• salt to taste
• 0.5 cups cooked, quinoa
• 0.25 cups flour
• 2 tbsp flax meal
• 40 g walnuts
• 1.5 cups puffed quinoa
• 1 cups plant-based mayonnaise
• 3 tbsp dijon mustard
• 0.5 batch pickled red onion
• 100 g lettuce, roughly chopped
• 4 burger buns