Preheat oven to 350 degrees Fahrenheit.

In a mixing bowl, combine flour, sugar, baking powder, and salt. Mix well and set aside.

In another large mixing bowl, combine egg, vegetable oil, and milk. Whisk until all the ingredients are distributed (using an electric mixer).

Continue whisking while gradually adding the flour mixture.

Turn the mixer off and add-in the blueberries. Fold-in the mixture until the blueberries are distributed well.

Arrange paper cups (muffin or cupcake cups) on a muffin pan. Scoop mixture and arrange in each paper cups.

Place the muffin pan inside the oven and bake for 22 to 25 minutes, or until it passes the toothpick test.

Remove from the oven and allow the temperature to cool down.

Transfer to a serving plate and then serve. Share and enjoy!