Bring chicken broth to a boil in a saucepan for ten minutes. Add green beans to it and boil for another ten minutes. Set it aside once cooked.

Melt butter in the cooking pan. Then add onions and mushrooms to it and saute for five minutes.

Drain green beans and add it to the mushroom mixture.

Keep the flame at medium. Then add cream of mushroom soup, onion rings to the pan. Season it with garlic powder, salt, black pepper and stir frequently.

Preheat the oven to 350 degrees Fahrenheit. Add the soup mixture to the butter-greased baking dish.

Bake the casserole dish for twenty minutes.

Put grated cheese on top and bake until it melts.

Paula Deen green bean casserole is ready.