The forwards each had two goals and an assist to help the Devils to a 6-2 win against the Buffalo Sabres at KeyBank Center on Monday.
Bratt, a rookie selected by New Jersey in the sixth round (No. 162) of the 2016 NHL Draft, and Johansson, acquired in a trade from the Washington Capitals on July 2, combined for all four Devils goals in the second period.
WATCH: All Devils vs. Sabres highlights
After Sabres forward Evander Kane scored the first of his two goals at 5:02 of the second period past Cory Schneider to get Buffalo within 2-1, Bratt made it 3-1 21 seconds later with a shorthanded goal. Bratt and Adam Henrique had a 2-on-1 break against Sabres defenseman Nathan Beaulieu. Henrique passed to Bratt, who scored on a backhand past Chad Johnson.
"I think we had a great game," said Bratt, 19, who has five points (three goals, two assists) in his first two NHL games. "All the goals were good goals and we were in the dirty places around the net and were very strong in front of the net. It was a good game for us and it was nice to score a couple goals."
It was the fourth shorthanded goal allowed by the Sabres in the first three games.
"I just think our effort was unacceptable," Sabres coach Phil Housley said. "This game is a game of mistakes and it just seems we're making key mistakes at times in the game that are ending up in our net."
Johansson made it 4-1 at 7:49 when he received a drop pass from Taylor Hall after Hall stripped the puck from Beaulieu.