Peanut Butter Surprise Cookies

Ingredients

• 1 1/2 cups peanut butter
• 1 1/2 cups powdered sugar
• 1 cup butter, softened
• 1/2 cup peanut butter
• 1 cup sugar
• 1 cup brown sugar
• 2 egg whites
• 2 teaspoons vanilla
• 3 cups flour
• 1 cup baking cocoa
• 1 teaspoon baking soda
• 4 tablespoons shortening
• 2 cups powdered sugar
• 1/2 teaspoon vanilla
• 2 to 4 tablespoons milk