Italian confectioner Ferrero, known for brands like Nutella and Kinder, is buying the century-old U.S. cereal company WK Kellogg in an effort to expand its North American sales.

The Ferrero Group said Thursday it will buy WK Kellogg Co. in a deal valued $3.1 billion, expanding the Italian food giant's global reach. Kellogg, which was founded in Battle Creek, Michigan, in 1906, is known for brands including Corn Flakes, Froot Loops, Rice Crispies and Special K. Ferrero's brands include Nutella and Rocher chocolates.

WK Kellogg, the Battle Creek-based maker of cereals, agreed to the sale as the company has struggled with weakening consumer demand due to inflation.