Preheat oven to 350ºF. Coat the mini-donut pan with non-stick cooking spray.
Whisk flour, sugar, baking powder & salt in a large mixing bowl.
Add soymilk, chocolate chips and margarine to a sauce pan and heat the mixture just until margarine and choc. chips melt. Let cool. Whisk in egg (or egg replacer mixture) and vanilla.
Add wet ingredients to dry ingredients and mix well to incorporate.
Fill the greased pan half full, bake for 12 minutes or until the cake tester comes out clean. Remove on to a cooling rack and repeat with remaining batter.