Sesame-Seed cookies

Ingredients

• 3 cups all-purpose flour
• 3/4 cup sugar
• 2 teaspoons double-acting baking powder
• 1/8 teaspoon salt
• 1/2 stick (1/4 cup) unsalted butter, cut into bits and softened
• 1/4 cup vegetable shortening, softened
• 2 large eggs, beaten lightly
• 1/4 cup milk
• 2 teaspoons vanilla
• 3/4 cup sesame seeds