The 44-year-old royal will need to whip up a "rich gravy" for her 41-year-old husband if she wants their holiday celebration on November 27 in their lavish $US30 million ($A47 million) Californian mansion to go down without a hitch.
Meghan has shared her top tips to host a perfect Thanksgiving.
"Chop your veggies and herbs in advance to save time on the day, and also for those finishing touches, whether you're serving homemade or store-bought dishes," she told People.
"Your kids can join in too! They can proudly say they helped," she said.
"Top tip on the carrots - keep the tops and blend them with parmesan, olive oil and pine nuts for a refreshing take on pesto to elevate your holiday spread.
"Served with creamy mashed potatoes, a green salad speckled with flower sprinkles and rich gravy (my husband would never forgive me if I didn't add that to the table), this is sure to please your entire gathering."
The Duchess of Sussex suggests having lots of candles burning to achieve the ultimate cosy and calm atmosphere.
"Light a few candles - choose scented ones to set the mood in the living areas and unscented for the kitchen (in those spaces, let the fragrance of the food shine)."
She also encouraged people to welcome guests with a drink and some food before beginning with "a few ice breakers".
"Welcome your guests as they arrive with drinks and have some easy appetisers ready to enjoy (think baked Brie with jam, perhaps?).
"Set out a few ice breakers, like puzzles or board games, to spark conversation and help guests connect."
The Duchess of Sussex says meeting guests' needs is vital for a successful party.
"Being a great host is all about anticipating your guests' needs - something I learnt working in restaurants and now love bringing into my own home.
"With a little thoughtful planning, you can make everyone feel comfortable and cared for."
And her last top tip is for hosts to ask for support if they need it.
"When guests offer to help, say yes! You don't get the gold star for doing everything," she said.
"Whether someone wants to bring a pie, pick up a side dish, or provide the ice cream, letting your guests contribute lightens your load and creates a sense of shared celebration."
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