Ashton Kutcher, Mila Kunis eat at Red Lobster with his family in Iowa!

Ashton Kutcher and Mila Kunis really are just like Us -- they love cheddar bay biscuits and all-you-can-eat crab legs!

Topping off over a week's stay with Kutcher's family in Iowa for the holidays, Kutcher, 34, and girlfriend Kunis, 29, joined the actor's family for a festive dinner Dec. 26 at a Red Lobster in Cedar Rapids, Ia., multiple observers confirm to Us Weekly.

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Looking "cool and casual," the group of nearly two dozen commandeered a large table in the corner of the eatery -- and had a "fun time" during the meal, the host that seated them told Us. The Black Swan actress "got along well with the family," the host adds. Clad in a sweatshirt and jeans, Kutcher "had his arm around her waist at the table."

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Adds another witness: "They were both laughing . . . She looked like she was almost part of the family -- she got along well with them."

According to another witness, Kunis, wearing minimal makeup, talked about "her family and Africa" during the meal.

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By the next day, Kunis and Kutcher had moved on to Chicago, where they were spotted having a one-on-one lunch at Prasino. Sharing a short rib skillet and Florentine crepes, the couple was "very courteous to staff and flirtatious with one another," a rep for the farm-to-table restaurant tells Us.

While Kutcher and Kunis kicked off their Midwestern holiday, an attorney for the actor filed divorce papers to sever his union with Demi Moore; the pair separated in November 2011.

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