Prepare a muffin pan with either Reynolds foil bake cups or silicone reusable baking cups.
Mix all of the dry ingredients together (I use one of the shaker jars).
Add water and vinegar to the shaker jar and mix well.
I mix with a small spatula to get down in the corners of the shaker jar and along the bottom.
Pour into the prepared muffin pan and place in over for 15 to 18 minutes. The original recipe called for 15 minutes, but I've found that 18 minutes in my oven creates the perfect muffin for me!