The Frenchman drew comparisons with Fernando Torres as he struck twice on the night.
Asked about Ekitike's performance, Slot said: "Yeah, but not only him, I think our other signings played a very good game as well. Everyone should talk about his goals and his actions and how nice this is because this is where pundits or every fan should talk about, because that’s much more important than work off the ball for them.
"But for me, as a manager, I see throughout the last six or seven months improvement but lately a lot of improvement in terms of work-rate off the ball – not even work-rate but the ability to keep on going off the ball, especially with Hugo and Florian (Wirtz).
"They’ve improved in the last seven or eight months but now I think everyone can see that improvement as well. The more we have the ball they can show how special they, and all the ones who won the league here, are together, and unfortunately that took a bit of time because that is how high the intensity levels of the Premier League are."
Slot was also asked about Ekitike's character around the club: "Funny, happy, always brings a nice energy to the training ground, but also to the stadium because the fans love him as well. From the start, I think everybody could see how special he is, how fast he is.
"That was probably seen the best in the second goal he scored; he took a one-v-one on, went on the outside, which is very, very difficult in modern football to beat someone around because usually players go to the inside and have a shot with the right. But there you can see his pace.
"Again, I would love to mention the fact that probably didn’t even improve that much on the ball because he was special from the start, but his biggest improvement is his work-rate off the ball and that is so helpful and necessary for any team, let alone for a team that wants to press throughout 95 minutes."