Mushroom Spinach And Brown Rice Casserole

Ingredients

• 225g button mushrooms, cleaned and coarsely chopped
• 1 large onion, finely chopped
• 225g baby spinach leaves
• 1 cup cooked quinoa, at room temperature
• 2 cups cooked brown rice, at room temperature
• 1 cup toasted hazelnuts, chopped
• 1 large egg
• 2 egg whites
• 1 cup 1% fat cottage cheese
• ½ cup 0% fat greek yogurt
• ½ tsp salt
• ½ tsp black pepper
• 50 grams sharp cheddar cheese, grated
• 1-2 tbsp freshly grated parmesan cheese, for garnish (optional)