George Weston Ltd, Weston Foods' parent company, announced the deal for the Ontario-based firm today (6 March). Financial details were undisclosed.
Kevin McDonough, president of Weston's frozen and biscuit divisions, said: "This strategic acquisition will complement our growing cake and sweet goods business with high quality, innovative and unique products and capabilities."
Starr Culinary Delights supplies a range of cakes and desserts to retail and foodservice customers in North America, George Weston Ltd said.
George Weston Ltd said it is lining up capital investments of around C$300m in "targeted areas of growth" and "incremental investments in innovation and capabilities".