I will soon be starting a new #DnD 5E campaign. I've done that in the past, and for the most part the system has worked for me - except for one thing:

NPC stat blocks for spellcasters.

For everything else, NPC and monster stat blocks include all the information you need to run them in combat. Not so with spellcasters - for with them, you have to look up each and every spell they might use in a fight, and that takes me away from the game.

So I am wondering: How are others handling this issue? Have you found any ways of simplifying spellcaster stat blocks so that everything you need to run them is on a single page?