Oh sorry! I didn't use baking powder as I substituted the original recipe to use SR flour! Mine rose slightly but not heaps. I think I filled the muffin tray 2/3 of a way up? If you want to add 1/2 tsp of baking powder go for it it certainly won't hurt. Make sure you don't over mix too or they will be dense.

Hmmm all-in-one breakfast muffin... don't think so... remind me...