I have only actually done this once - went to the stove to craft all types of meals but since I don’t think this has been mentioned yet in any prior patch notes I wanted to be sure this is also addressed in any inv stack size solution:
When preparing meals at the stove, the menu which you select meals can only pull from one stack of materials at a time. This can lead to not only having to craft the same meal time multiple times but in the case where a stack is brought to 1 (for example), it will literally not be usable by any recipe requiring more than 1 of that item. Meaning you will have to purchase more of that item and sell the stack of 1 to solve.
As far as I know there isn’t any way to combine stacks unless you go back to your house and interact with the chests, in my case I was cooking meals in the shop area. Seems like an easy fix!