How can I make a "custom crafting recipe" , which requires a certain amount of items?

How can I make a "custom crafting recipe" , which requires a certain amount of items? Like for example 16x cobblestone => 1x cobbled deepslate? 
I figured out the 1x => 1x with the Misode website recipe and got it working, but from doing research I seen that its not really possible easily to require an amount of items for the recipe... Have to do it via a custom function ro? Im not really sure