*Percent Daily Values are based on a 2,000 calorie diet. Your daily values may be higher or lower depending on your calorie needs.
**Nutrient information is not available for all ingredients. Amount is based on available nutrient data.
(-)Information is not currently available for this nutrient. If you are following a medically restrictive diet, please consult your doctor or registered dietitian before preparing this recipe for personal consumption.
Heat water in a sous-vide water bath to 141 degrees F (60.5 degrees C).
Place each chicken breast between 2 sheets of heavy plastic wrap on a work surface. Flatten chicken with smooth side of a meat mallet to 1/4-inch thickness.
Heat olive oil and butter in a skillet over medium heat. Add onion, celery, and Cajon seasoning; cook and stir until onion is softened and translucent, about 5 minutes.
Place mozzarella cheese, mushrooms, egg, bread crumbs, parsley, and Parmesan cheese together with onion mixture in bowl of a food processor; blend into paste.
Spread paste onto one side of chicken breasts; roll breasts and secure with toothpicks. Spread remaining paste and sprinkle Cajun seasoning onto rolled breasts; place in individual sealable plastic bags. Seal bags (on low pressure if using a vacuum sealer), removing as much air as possible. Cook chicken in the preheated water bath for 2 hours. An instant-read thermometer inserted into the center should read at least 165 degrees F (74 degrees C).