I made some pancakes using protein powder -actually I used "Designer Whey". Its not made specially for baking so if it worked, I suppose any kind would. Gotta be honest though, my 'cakes were pretty flat (even w/ salt & baking powder) and they were SUPER dry (like they'd get caught in your throat). I dobt if my dog would even eat them and she eats ANYTHING (even raw veggies!). Pork rind french toast is MUCH better!!!