Preheat the oven to 400°.

In a large bowl, whisk together the flour, sugar, baking powder, and salt.

In another bowl, beat the egg and then add it to the flour mixture along with the milk and cooking oil.

Stir just until blended.

Don’t overmix.

Gently fold in the chocolate chips.

Fill greased muffins cups about ⅔ full.

Bake for 20 to 25 minutes or until done.

Remove the muffins from the pan and cool on a wire rack.