Glenn Murray scored two and set-up another for Andre Moritz as the Eagles' quality and experience told against a youthful looking Derby side.
"It's yet another fantastic performance against a good team," Holloway said.
"They didn't stop from start to finish and the professionalism and determination to keep this run going is awesome and I have to say it's an absolute pleasure to watch them play at the moment.
"So, very excited, well done, it's a great performance and it shows signs of being a bit more than solid."
"That's seven in three (Murray has) scored for me. Quite awesome, his second goal was as good as I've seen. Brilliant - his strength to hold him off then to come in and then flip it over (the goalkeeper)."