From 2003 Tastes for All Seasons
Rhinebeck Reformed Church
2 c flour
2 tsp baking powder
1/2 tsp baking soda, sieved
1/2 tsp salt
2 Tbsp sugar
1 stick butter
1 c King Arthur cinnamon chips
1 egg, separated
1 tsp vanilla
3/4 c buttermilk
In large bowl, mix together flour, baking powder, baking soda, salt and sugar. Cut in butter until crumbly. Stir in cinnamon chips. In smaller bowl, combine egg yolk, vanilla and buttermilk. Add mixture to large bowl until combined. Turn dough out and knead 6 to 10 turns. Divide dough in half and pat each half into a 6 to 7-inch circle. Cut each circle into 6 wedges. Brush each circle with egg white. Dust with sugar. (I separated the wedges)
Bake on ungreased cookie sheet at 375 degrees for 18 to 22 minutes until golden brown. Cool 5 minutes, then cover loosely with dish towel until completely cool.