Preheat oven to 350°F.
Whisk together the canned cream of mushroom soup, sour cream, milk, garlic powder, Kosher salt, freshly ground pepper, and Worcestershire sauce in a large bowl. Add four ounces of freshly shredded extra-sharp cheddar cheese, then stir to combine.
Measure one cup of French's Crispy Fried Onions, crush them in your hands, add them to the bowl, and stir to combine. Add four cups of thawed green beans and gently stir to combine.
Spray a 9x13 inch baking dish with non-stick cooking spray and transfer the green bean mixture. Then, smooth it into an even layer. Set the dish aside while preparing the stuffing.
Place the chicken broth and unsalted butter in a large bowl. Then, microwave the bowl in 30-second increments. Stir after each heating, breaking the butter apart, until the butter has completely melted. This should take about three minutes.
Pour the boxed stuffing mix into the bowl with the broth mixture. Use a fork to stir until thoroughly moistened and well combined.
Transfer the stuffing mixture to the baking dish on top of the green bean mixture. Carefully smooth it out into an even layer, pressing it tightly. Bake in a 350°F oven for 40 minutes.
Remove from the oven and sprinkle the top with the remaining four ounces of shredded cheddar cheese and French's Crispy Fried Onions. Return the dish to the oven and bake for 10-15 minutes until golden brown. Allow to cool for five minutes before serving.
Allow to cool for five minutes before serving.
Yield 12 servings.