Mix all ingredients together in a large bowl until everything is combined and well blended (no lumps!).

Grease or line a muffin pan and drop the batter into the liners with a muffin scoop.

Sprinkle with sugar before baking.

Bake the muffins at 400 degrees for about 15 minutes or until a toothpick comes out of the center of a muffin clean.