The 48-year-old actor revealed as much in an interview with FOX411 published Monday. McDermott recently documented the fallout from his extramarital affair on Lifetime series True Tori, and said the new project will be much more upbeat.
"We're going to do some stuff for the Cooking Channel," he announced. "It's going to be lighthearted, nothing like True Tori. Do some cooking stuff, maybe some travel stuff, stuff with the family but lighthearted and fun. Those days of baring our souls to the world are over."
McDermott cheated on the 41-year-old actress in December 2013, and subsequently entered rehab to address his infidelity and substance abuse issues. The actor quit True Tori after two seasons, citing his inability to deal with such personal material being broadcast to the public.
"I don't ever want people to see that side of me again, that realness, that rawness," he reiterated in the interview. "I think I gave too much of myself and exposed too much of myself and my feelings in a very, very vulnerable state that maybe if I wasn't in that state I wouldn't have shared."
McDermott and Spelling married in May 2006, and have four children together: sons Liam and Finn and daughters Stella and Hattie. The actress suffered a severe burn while spending Easter with her family, and is being treated with skin grafts this week.