Newcastle boss Eddie Howe was delighted with 2-goal Alexander Isak after victory at Nottingham Forest.
It was a standout performance from Isak, who now has six goals in 10 Premier League appearances having fought off competition from team-mate Callum Wilson for a starting role in recent weeks.
Isak, who signed for the Magpies in a deal that could be worth £60m, scored in the 2-1 win over Wolves last weekend before netting both goals in Nottingham and now says their European hopes are "in our own hands".
"We are always dangerous and create chances. It is just a matter of whether it goes in or not," said 23-year-old Isak.
"We believe and we know that we have it in our own hands and have a good chance. We have to keep on taking it one game at a time and try to win."
Toon boss Howe said Isak was "ice cool" when taking the late penalty and that the confidence gained from his recent performances will be "key" going forward.
"It's a huge moment for us in our season. It's not easy to do that but he put it away really well. The first goal was a slightly unorthodox finish. It's great to see," added Howe.
"I thought he was a constant handful for Nottingham Forest. His pace and trickery was evident. He's building nicely to make a huge impact for us.
"We felt we were signing a top, top player that was capable of doing amazing things. I thought he showed that [at Forest].
"But I believe with every player there's room to improve and he has a huge part to play in our future."