Cinnamon Sugar Biscotti

2 cups flour
2 tsp cinnamon
1 tap baking powder
1/4 tsp salt
2/3 cup sugar
6 tbs butter
2 eggs
1 tsp vanilla extractFor topping:
3 tbs sugar
2 tsp cinnamon
Preheat oven to 325F. Sift together flour, first 2 tsp cinnamon, baking powder and salt. In another mixing bowl, cream together the larger measure of sugar and butter. Beat in 1 egg and vanilla extract. Combine with the dry ingredients.
Divide the dough in two, and roll into a log around 8 inches long and 2 inches wide (more or less). Place each loaf on a greased backing sheet. Beat remaining egg, and brush over each loaf of dough. Bake for 25-30 minutes, or until golden on top. Remove from oven and let cool for 15 minutes. Don't turn off your oven.
Move to a cutting board, and slice each loaf into diagonally slices, around a half inch thick. A serrated knife will work best. Place slices back on your baking pan, cut side down. Sprinkle the face-up cut sides with the remaining sugar and cinnamon. Put biscotti back in the oven and bake for another 15-20 minutes.
