US food giant Sara Lee has moved its Ball Park hot dog brand into the frozen category with the launch of Flame Grilled Patties.

The launch, the company said, will be Ball Park’s first major brand extension outside of hot dogs in its 50-year history.

The fully-cooked patties, made with 100% beef, are flame grilled and then flash frozen, ready to be cooked in one minute.

“Ball Park’s entry into the $400m frozen burger category is the next step to advancing our strategy of expanding from the number one beef hot dog into a leading brand in the guy food space,” said Aaron Alt, general manager of the Ball Park brand. “The new Flame Grilled Patties really deliver on quality and taste, and are also incredibly convenient, something consumers have come to rely on from Ball Park.”

The Flame Grilled Patties range is available in three variants: Beef, Beef & Onion , and Beef & Cheese. Packaged in resealable six-count packs, the patties are being launched into grocery stores nationwide this month with an SRP of US$8.29.