Cinnamon Sugar Biscotti

1 . Stage

Preheat the oven to 325 degrees F (165 degrees C). Line a baking sheet with parchment paper.

2 . Stage

Sift together flour, 1 1/2 teaspoons cinnamon, baking powder, and salt; set aside.

3 . Stage

In a medium bowl, cream together 2/3 cup sugar and butter. Beat in egg, egg yolk, and vanilla. Stir in flour mixture.

4 . Stage

On a lightly floured surface, divide dough in half. Roll each piece into a log about 9-inches long and 1 1/2-inches wide. Place logs on the prepared baking sheet and flatten slightly. Brush with beaten egg.

5 . Stage

Bake in the preheated oven until golden and firm to the touch, 25 to 30 minutes. Cool for 15 minutes.

6 . Stage

On a cutting board, slice each log crosswise at a diagonal into 1/2-inch-thick slices using a serrated knife. Place cut-side down onto the baking sheet. Combine 3 tablespoons sugar and 1 teaspoon cinnamon in a small bowl; sprinkle over biscotti.

7 . Stage

Return to the oven until toasted, 15 to 20 more minutes. Cool on wire racks and store in an airtight container.