Blend flour, sugar, baking powder and salt together in large mixer bowl.
Add shortening, 2/3 cup (150 mL) milk and vanilla.
Beat 2 minutes on medium speed, scraping sides and bottom of bowl constantly.
Add remaining milk and unbeaten egg whites.
Beat 2 minutes more, scraping bowl frequently.
Fill greased muffin cups 3/4 full and bake at 350°F (180°C) for 15 to 20 minutes or until toothpick inserted in center comes out clean.
Remove from pans and cool.
Frost and decorate as desired.
Makes: 24 cupcakes.
Date: February 16, 2003