Bartolo “Buddy” Valastro Jr. was born in Hoboken, New Jersey, and grew up there and in Little Ferry, New Jersey. His mother was born in Altamura, Italy, and is the daughter of Italian-American immigrants who moved to New Jersey when she was six years old. His father, Buddy Sr was born in Lipari, Italy. Valastro grew up with four sisters: Grace, Mary, Maddalena and Lisa.

He attended Ridgefield Park High School and took baking courses at the Bergen County Technical High School, Teterboro Campus. Valastro began working at his family’s business, Carlo’s Bakery at age 11, alongside his father. When his father died in 1994, Valastro was 17. Valastro took over the family business.