The Main Corpse by Diane Mott Davidson

She has been called "the Julia Child of mystery writers." Now, Diane Mott Davidson, who masterfully served up The Last Suppers, Killer Pancake, and Dying for Chocolate, returns with an irresistible five-star helping of suspense. When caterer Goldy Schulz takes a job with a multimillion-dollar financial firm, she finds herself in a high-stakes world where someone is out to make a killing....