 Playing a two-way responsible game with the Rampage, Toninato received his first recall to the Avalanche on November 17, 2017.Centering a line between Sven Andrighetto and Nail Yakupov, Toninato made his NHL debut with the Avalanche in a 5–2 defeat to the Nashville Predators on November 18, 2017.During the first period, Toninato was illegally boarded by the Predators' forward, Austin Watson, who was ejected from the game and later suspended.