old-fashioned pineapple cookies- grandma's

Ingredients

• 1/2 cup shortening
• 1/2 cup brown sugar
• 1/2 cup sugar
• 1 - egg
• 2 cups flour
• 2 teaspoons baking powder
• 1/4 teaspoon baking soda
• 1 cup crushed pineapple , drained, reserve 3 tablespoons juice for icing
• 2/3 cup chopped walnuts
• 1/4 teaspoon salt
• 1 teaspoon vanilla
• ICING:
• 1 1/2 cups powdered sugar
• 3 tablespoons pineapple juice