For many, it was Lammens' best performance for United as Benjamin Sesko struck on 71 minutes to earn the points from the Toffees.
After the 1-0 win, Lammens said: "Today was about the hard work, defending together. We know we didn't do our best, especially first half, it was difficult
"We have to be better on the ball but if we defend well, don't give balls away then we have the players up top to make the difference.
"I always want to be confident. Since the manger has come in we have bee defending well together. we know if me and the defence keep it (goals against) to zero then we have a chance to win.
"Everton are a physical team, their defenders are really big, We knew the corners and set pieces would be difficult, It's a strength of mine (dealing with crosses), but today it was a bit over the top! I had to be behind the line in order to come out. It was too much, but it can be difficult for the referee to see it.
"Sometimes you can't be thinking too much about players around you, because then you aren't thinking about the ball. My defenders can create space for me, so I have opportunity to come and punch the ball away. But it is getting more and more difficult."
Lammens added: "As a goalkeeper at Manchester Untied the pressure is even bigger, but I try to stay calm, play my own game, I know I have the qualities otherwise I wouldn't' be here.
"I believe in myself, my team-mates support me, it was a good transition for me. I keep building and growing in confidence. If I am being compared with Edwin van der Sar, it is always nice!"