I make keto pancakes out of a bought keto flour pancake mix (almond flour and cassava and coconut flours are main components). I mix these with either water or whole milk, making not too thick mixture, and cook on a cast iron pan with a pad of butter placed on heated pan first.
A problem I run into consistently is this: the first pancake cooks very well--well browned outside and cooked inside. But subsequent pancakes come out slightly burned outside while under-cooked inside.
I make sure to keep the pan on medium heat throughout and add butter in between pancakes in order to keep the pan well-greased. I make sure to turn pancake from one side to other when bubbles form. However, that doesn't help it.
Is there something else I can do to make sure to have several pancakes in a row come out well-cooked inside and not burnt outside?