1. Preheat the oven to 350 degrees Fahrenheit.
2. Beat the flour, sugar, baking powder, and salt together.
3. In a separate bowl, beat margarine. Beat eggs, one at a time, into margarine. Add the margarine mixture to the dry ingredients.
4. Add milk/soy milk, vanilla, and oil. Beat batter together.
5. Spray a mini cupcake tray and fill with the batter.
6. Bake for 10 to 15 minutes.