Preheat the oven to 375 degrees
In a large bowl...Whisk flour, sugar, powder, soda, and salt together
Add the butter to the flour mixture, and cut in with a fork
In a small bowl mix the sour cream, one of the eggs, and buttermilk
Add the wet ingredients to the flour mixture
Mix to foram a dough
Fold in raisins and optional caraway
Set a piece of wax paper on your work surface, lightly flour the wax paper
Lightly knead the dough
Place parchment paper on your baking sheet or inside your iron skillet
Spray the parchment paper with spray oil
Shape the dough into a round loaf
Place it on the greased lined baking sheet or iron skillet
Cut an X in the top of the bread loaf
Whisk the remaining egg and brush it on the top of the loaf
Bake for 30-35 minutes