Vegan Green Bean Casserole - Clean Green Simple

Ingredients

• 1 medium yellow onion (thinly sliced)
• 1 cup non-dairy milk (plain)
• 1/3 cup all-purpose flour
• 1/2 teaspoon salt
• 1/4 teaspoon ground black pepper
• 1 teaspoon garlic powder
• Cooking spray
• 1 pound green beans (trimmed and halved)
• 6 tablespoons vegan butter
• 3 garlic cloves (minced)
• 1/2 medium yellow onion (diced)
• 4 tablespoons all-purpose flour
• 2 1/2 cups non-dairy milk (including drained milk)
• 8 ounces mushrooms (sliced)
• 1 tablespoons soy sauce (or tamari)
• Salt and pepper