Preheat oven to 425 degrees F.
Grease a 12 cup muffin tin.
Sift dry ingredients together.
Pour milk into a 2 cup measuring cup. Add egg, melted butter and vanilla extract. Whisk.
Add wet ingredients to the dry and stir to combine.
Portion muffin batter into prepared tin.
Place tin in the preheated oven and bake for 15-18 minutes.
Muffins are done when they are light brown and an inserted toothpick comes out mostly clean.