Italian Almond-Blood Orange Cookies

Ingredients

• 1/2 cup sliced blanched almonds, toasted and cooled
• 2 cups (about 10 ounces) all purpose flour
• 1/2 teaspoon baking powder
• 1/2 teaspoon salt
• 16 tablespoons (2 sticks) unsalted butter, at room temperature
• 1 cup (about 7 ounces) sugar
• 1 egg yolk (white reserved)
• 1 teaspoon vanilla
• 1 packed teaspoon blood orange zest from about 1 small blood orange
• 1 egg white (reserved from egg above)
• 1 1/2 cups sliced blanched almonds
• confectioners sugar, for dusting