Gluten Free Green Bean Casserole

For the crispy onions 1 large onion 1 1/2 cups of milk 2 tablespoons white vinegar 6 tablespoons besan or chickpea flour salt black pepper pinch of sugar  

For the green beans 1 shallot, diced 2 tablespoons of butter 2 cans of gluten free mushroom soup 200 grams button mushrooms 400 grams trimmed green beans salt pepper

Gluten Free Green Bean Casserole

Instructions: