Valladolid-Rodriguez joined the staff of Bon Appétit magazine as an editor and recipe stylist. She also competed on the 2005 series , in which she came in fourth place. Valladolid-Rodriguez's first cooking show was Relatos con Sabor on Discovery en Español which aired in the U.S. and Latin America. In the series, she showed viewers how local Hispanic homes preserve and revive traditional recipes. Valladolid-Rodriguez's first cookbook, Fresh Mexico: 100 Simple Recipes for True Mexican Flavor, debuted in August 2009 and has since received positive reviews. Valladolid-Rodriguez's second cooking show, "Mexican Made Easy", debuted in January 2010 on the Food Network. Her second cookbook, Mexican Made Easy, was released in September 2011 as a companion book to her show. Both Valladolid's book and the show, filmed in San Diego, were designed to show the world there is no "yellow cheese" in traditional Mexican cooking and that her Mexican culinary style can be done with "fresh flavor that fits all." Valladolid-Rodriguez has also appeared in other Food Network shows. On Throwdown! with Bobby Flay she was a judge for a fish taco-themed competition. She and Flay teamed up to defeat Masaharu Morimoto and teammate Andrew Zimmern on a New Year's edition of Iron Chef America in 2012. Also in 2012, she competed in a celebrity version of Chopped in which she advanced to the final round and finished second. In 2013, she served as a judge on Guy's Grocery Games. Valladolid-Rodriguez was one of two judges on the CBSreality TV cooking competition series The American Baking Competition. On November 27, 2013, Valladolid-Rodriguez was a guest model on the Thanksgiving episode of The Price Is Right, and long before that was a contestant in 2004 playing "That's Too Much", winning a car. In January 2014, Marcela debuted as one of the co-hosts on Food Network's new show The Kitchen. and left the show in October 2017.
Personal life
Valladolid-Rodriguez lives in Chula Vista, California. She has sons named Fausto and David, and a daughter, Anna. She is engaged to Philip Button. In 2013, Valladolid-Rodriguez had a brief affair with her The American Baking Competition co-host Paul Hollywood. Hollywood and his wife separated temporarily because of the affair before reconciling, but it was cited in news of their second separation in 2017.