Preheat the oven to 400 degrees.  Once the oven is preheated, stick your cast iron pan with 3 tbl butter in the oven to pre-heat as well.

In a large bowl, combine eggs and milk and whisk these ingredients vigorously the mixture is light yellow.  Add flour,and 1 tbl sugar, vanilla extract, cinnamon, salt and continue to whisk until there are no lumps left.

Carefully remove your cast iron pan from the oven and pour most of the melted butter in your batter.  Put the pan on the stove top over medium heat.  There should be a little butter left in the pan.  Make sure you swirl the pan around so that the butter coats the entire bottom of the cast iron.   Whisk to blend the butter in the batter, then pour it into the hot pan on the stove.  Top with fresh berries.  Let it cook for about a minute on the stove top before putting it back in the oven to bake.  Cook in the oven for about 15-20 minutes or until the dutch baby puffs up in the center, and the edges are golden brown.

Once the dutch baby is done, remove from the oven.  Using a spatula, remove the whole dutch baby from the pan and onto a cooling rack for a few minutes before serving.  Serve cut in wedges topped with a dusting of powered sugar and more fresh berries, if you’d like.