The Best Vegan Green Bean Casserole - Forks Over Knives

Ingredients

• 1 medium yellow onion, thinly sliced
• 1 tablespoon ground flaxseed
• 2 pinches sea salt
• 2 pinches black pepper
• 24 ounces fresh green beans, trimmed and cut into bite-size pieces (8 cups)
• 1 tablespoon sliced almonds
• 1 yellow onion, cut into ½-inch dice (2 cups)
• 16 ounces mushrooms, sliced (6 cups)
• 6 cloves garlic, minced
• ⅓ cup oat flour
• 2 cups low-sodium vegetable broth
• 2 tablespoons white wine vinegar
• 1 tablespoon Italian seasoning
• Sea salt and freshly ground black pepper, to taste