Britney Spears believes in the old adage, “The way to a man’s heart is through his stomach.” 

In fact, the X Factor judge proved the saying true on December 15 when she took her prowess from the stage to the kitchen — and made fianceJason Trawick‘s 41st birthday extra-special in the process. “Britney cooked dinner for Jason and the boys,” a source close to the happy couple told Celebuzz. And the family affair didn’t come to an end after the table was cleared. “They watched movies. It was just the four of them,” added the source, noting that Spears’ children — Sean, 7, and Jayden James, 6 — were on hand.