Pistachio Biscotti

Ingredients

• 1 1/2 cups pistachios
• 1/2 cup (1 stick) unsalted butter
• 3 eggs
• 1 cup sugar
• 1 teaspoon vanilla extract
• 3 1/2 cups all-purpose flour
• 1 teaspoon baking powder
• 1/2 teaspoon salt