He is a permanent judge on the Food Network's competition series Cupcake Wars, appearing in over nine seasons and 135 episodes to date.

However, a childhood chocolate allergy prevented him from enjoying sweets and desserts for six years, which temporarily discouraged his desire to bake.

"[3] Before starting his own company, Bellanger was the executive pastry chef at Fauchon and oversaw 24 other pastry chefs at its Tea Salon flagship store in New York City, a "legendary French Epicurean emporium"[4] of cakes, cookies, ice creams and sorbets.

[4] Bellanger was pastry chef of the world-renowned (three Michelin stars) restaurant Le Bernardin from 1996 to 2001, where his desserts were described as "light and dreamy" by Ruth Reichl of The New York Times.

[5] Bellanger is a member of City Harvest's Food Council and a guest chef at the French Culinary Institute in Manhattan, New York.