Prep Time::15 mins
Cook Time::30 mins
Additional Time::30 mins
Total Time:: 1 hr 15 mins
Servings::40
Yield::40 biscotti
Ingredients
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1 cup white sugar
¼ cup softened butter
3 eggs
1 egg yolk
1 ½ teaspoons vanilla extract
2 ½ cups all-purpose flour
2 teaspoons baking powder
Directions
Preheat oven to 350 degrees F (175 degrees C). Line a baking sheet with parchment.
Beat sugar and butter together in a large bowl with an electric mixer until light and fluffy; beat in eggs, egg yolk, and vanilla extract. Whisk flour and baking powder together in a bowl. Stir flour mixture into butter mixture to form a fairly sticky dough.
Divide dough in half; with wet hands, shape dough into two loaves, about 1-inch high at the center, on the prepared baking sheet.
Bake in the preheated oven until lightly browned, about 20 minutes; remove to cool completely on a wire rack, about 30 minutes.
Slice loaves into 1/2-inch slices with a serrated knife. Place cookie slices back onto lined baking sheet, cut sides up.
Increase oven temperature to 450 degrees F (230 degrees C).
Bake in the preheated oven until golden brown, turning once, 3 to 4 minutes per side.