2/3 c. Powdered Milk OR 2 c. Whole Milk
5 tbsp. margarine
2 tsp salt
1 c. sugar, divided
5 1/2 c. Flour, divided, plus more for dusting
2 eggs, slightly beaten
1 1/2 tbsp. instant dry yeast, About two packets
2 c. Sour Cream
8 oz. (225 g) Cream Cheese, room temperature
1/4 c. Butter, room temperature
2 c. Powdered Sugar
1 tsp. Vanilla
Total Time: About 2.5 hours
Servings: 48 Butterhorns
Notes: Check out this article for how to scald milk. Warm the oven if you are having trouble getting the dough to rise. Watch to make sure the butterhorns do not burn.
Put powdered milk into a microwave safe container that can hold 2 cups of liquid. Add enough water to the powdered milk to make 2 cups of milk and mix well. Scald the milk, in microwave on high for about 4 minutes or on the stove-top by stirring and heating to 180 F (82 C). Pour over margarine, salt, and 1/2 c. sugar in a large mixing bowl. Mix to dissolve and allow to cool to lukewarm. Heat oven to warm.
Once the mixture has cooled, add 2 c. of flour and the eggs and mix well. Add 3 1/2 c. flour and yeast. Mix well until a soft dough begins to form. Turn on to a well floured surface and knead until the dough is well combined, about 5 minutes. Oil the mixing bowl. turn the dough in the bowl to coat. Cover bowl with plastic wrap and a towel. Turn off oven and place bowl in the oven. Allow dough to rise for 1 hour or until dough has doubled.
Remove from oven and punch dough down. Turn dough onto a floured surface and cut into 6 even pieces, take one and set the other 5 to the side. Roll the piece into a circle, about 1/4 inch thick. Spread a thin layer of sour cream on the circle and lightly sprinkle with sugar. Cut the circle into 8 pie pieces. Tightly roll the pie pieces with the larger end toward the point, like a croissant, to form the butterhorn. Place the rolled butterhorn onto a parchment lined or greased cookie sheet. Continue this process until you have 48 butterhorns. Allow the butterhorns to rise for 30-45 minutes. You can warm the oven again if you are having problems with rising. Once the butterhorns have risen, heat oven to 350 F (175 C). Bake the butterhorns for 10-15 minutes on the middle rack, or until golden brown. Allow to cool.
To make the frosting, add all the ingredients to a bowl. Mix until the butter and cream cheese has creamed. Frost the cooled butterhorns and decorate with sprinkles.