Combine pudding mix ingredients; store in an airtight container. For pudding, combine 1-1/4 cups mix and milk in a 2-qt. saucepan. Bring to a boil over medium heat, stirring occasionally; boil for 1 minute. Remove from the heat. Stir a small amount into egg; return to pan. Cook and stir over medium heat for 2 minutes. Remove from the heat; add butter and vanilla. Mix well. Pour into dishes; cover and chill 2-3 hours.
For chocolate pudding: Add 3 tablespoons baking cocoa to 1-1/4 cups pudding mix before mixing with milk.