Preheat your oven to 350 degrees Fahrenheit (175 degrees Celsius) and prepare a muffin tin with paper liners, enough for 8 muffins.
Add the flour, baking powder, salt, and sugars to a large bowl and whisk together to combine.
Measure the milk and vegetable oil into a large measuring cup, adding the egg and whisking until all the wet ingredients are combined.
Add the wet ingredients to the dry ingredients and mix just until no streaks of flour remain.
Combine the sugar and cinnamon for the cinnamon sugar topping.
Add one tablespoon of muffin batter to each of the 8 muffin cups. Top with a sprinkle of the cinnamon sugar.
Add another tablespoon of batter and some more cinnamon sugar. Repeat until the muffin cups are about 3/4 full and top the muffins with the remaining cinnamon sugar.
Bake at 350 degrees Fahrenheit (175 degrees Celsius) for about 20 to 25 minutes or until the tops of the muffins are golden brown and a toothpick inserted into one of the muffins comes out clean.
Let the muffins cool completely in their tins before enjoying.