Combine the milk, cream of mushroom soup, salt and pepper in a large bowl.
Add the green beans to the bowl along ½ of the French fried onions and mix to combine.
Empty the mixture in a casserole dish or a baking dish and place it in the oven to bake for about 30 minutes. Stir the baked mixture and add in the remaining French fried onions and place back in the oven to bake for 10 minutes. Enjoy!
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