Potato-Spinach Casserole with Trumpet Mushrooms

Ingredients (for 8 servings)

• 2 lb — Potatoes
• 2 cup — Onions
• 2 cup — trumpet mushrooms
• 4 tsp — garlic powder
• 2 tsp — Thyme
• 4 cup — spinach
• 1 whole — sea salt
• 1 whole — black pepper
• 7 oz — tofu
• 2¾ cup — plant-based milk
• ½ cup — chickpea flour
• 1 cup — brown rice flour
• ½ cup — nutritional yeast
• 1½ tsp — baking powder
• 1 tsp — salt
• ¼ tsp — Turmeric
• ¼ tsp — black pepper