With Six You Get Eggroll (1968)

Abby McClure, a widow with three sons, and Jake Iverson, a widower with a teen-age daughter, get fixed up. They start dating and decide to get married. They're not prepared for the hostile reactions from their children, especially Jake's daughter Stacy, who wants to be the woman of the house, and Abby's oldest son Flip, who hates Jake.