I ADORE these!!! They are a favorite treat but that recipe is overly complicated. I put the butter in a pie pan or cake pan (can use skillet too, but I used to have a tiny oven that the skillet didn't fit into) and put it into the oven to melt. I just dumped all the milk, eggs, spices into a bowl and beat with a fork for very little time (way under a minute - maybe 10-15 seconds?) then I dumped in the dry ingredients and stirred until mixed - again for a short time, as short as possible. Take the pan of now melted butter out of oven (don't let it burn even if you have to get it out before you are done mixing), pour in batter and bake. I don't do the high heat that you then turn down because the temp is at the lower temp by the time you put the dutch baby in it.
These are a yummy treat I had forgotten about. Thanks for the reminder! You can often find recipes for this under other names - oven pancake, german oven pancake, german pancake, etc... My great grandmother used to put very thinly sliced apples in the butter and let it cook in the pan as she mixed up the batter. I remember being in awe of how thin her slices were and how fast she cut them. I tend to just serve with either chunky applesauce, fried apples or applesauce if I don't want syrup on them.
