Vegan & Gluten Free Green Bean Casserole (Thanksgiving Side)

Name: Vegan & Gluten Free Green Bean Casserole (Thanksgiving Side)
Prep time: 20 min
Cook time: 35 min
Total time: 55 min
Cuisine: American
Ingredients: 1 lb green beans ends trimmed and broken in half; 2 tablespoon vegan butter; 1 tbsp olive oil; 4 sprigs fresh thyme; 1-2 cups white mushroom sliced thin; 1/3 white onion diced; 3 cloves garlic diced; Pinch salt; ½ teaspoon pepper; 2 tbsp nutritional yeast; 4 tablespoon flour added gradually; ¼ teaspoon poultry seasoning; 1 cup veggie broth*; 1 cup non-dairy milk unsweetened; salt and pepper to taste; 1 tbsp oat flour; 2 tbsp cornstarch; Pinch salt; 1/2 onion; 1/4 cup frying oil