Moravian Sugar Cake

My mom's family has a heritage from the Moravian church and we use to get Moravian sugar cakes when we would go back east to visit.  Recently my aunt's fiance was back there and he brought some sugar cakes for us which gave me the idea to make it so here is the first attempt. 

3/4 cup of milk
1 1/2 teaspoon of instant yeast
1/3 cup of sugar
1/4 cup of instant potatoe
1/2 teaspoon of salt
1 1/2 sticks of butter
1 egg
2 cups of flour
1 1/2 cup of brown sugar
1 tablespoon of cinnamon

 Warm milk to about 110 not much more. Preheat oven to 200 so you have a warm place to rise the dough.

Mix yeast and warm milk.

Add egg, 4 tablespoons of the butter, potato, white sugar, salt, and flour

 Mix on a medium heat for about 2 min until smooth.

Place dough in a greased bowl and cover.  Turn off oven and place in there until it has doubled about 30-60 min depending.

 Spread out dough in a greased pan and let rise in a warm place until doubled about 30-60 min again.

While rising cut cold butter into small pieces and mix brown sugar and cinnamon.  So the butter and sugar will be separate.

When the dough is risen dimple the dough with your fingers to make holes to palce the pieces of butter.  Place a piece of butter in each hole.

Sprinkle sugar over the whole thing.  You shouldn't see the dough and then bake at 375 for 18-22 min.