Mix the base: In a large bowl, combine frozen green beans, cream of mushroom soup, heavy cream, Worcestershire sauce, salt, and pepper. Add 1 cup of the dried onions and mix well.
Transfer to a baking dish and spread evenly.
Bake uncovered for 25–30 minutes, until hot and bubbly.
Top with the remaining 1 cup dried onions.
Return to oven for 5–8 minutes, until the onions are golden and crisp.
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