Preheat oven to 350°F. Lightly grease a donut pan with cooking spray or vegetable oil.
In a large bowl, beat together sugar and egg until light in color. In a small bowl, whisk together flour, baking powder, salt and nutmeg. Pour into egg mixture and stir to combine. Pour in vegetable oil, milk and vanilla extract.
Fill mini donut pan with batter, about 2/3 full. Bake for 11-12 minutes for mini donuts, until a tester inserted into the center comes out for mini donuts, until a tester inserted into the center comes out clean.
Use a small spatula and loosen around the circle of the donut to help ease the removal from the pan. Frost when cooled.
The nutrition information provided are only estimates based on an online nutritional calculator. This is not a comprehensive list of all the nutrients in the recipe (i.e., does not include vitamins, cholesterol, etc). I am not a certified nutritionist. Please consult a nutritionist or doctor for accurate information and any dietary restrictions and concerns you may have.