WESTCHESTER, ILL. — TreeHouse Foods, Inc. on Oct. 28 completed the acquisition of S.T. Specialty Foods for $180 million, plus an additional $15 million if the company reaches certain earnings targets for the year ending Dec. 31, 2010. Headquartered in Brooklyn Park, Minn., S.T. Specialty makes private label macaroni and cheese, skillet dinners and other value-added side dishes and salads. In addition to closing on the acquisition, TreeHouse extended the maturity of its revolving credit facility from Aug. 31, 2011, to Oct. 27, 2015, and increased the amount available under the facility to $750 million from $600 million.