In a large bowl, whisk all of the dry ingredients together until well combined and the ingredients are evenly distributed.
In a separate bowl, whisk all of the wet ingredients together for 1-2 minutes until smooth.
Make a small well in the dry ingredients and pour the wet ingredients in all at once. Whisk everything together until just combined, there may be a few lumps. Avoid over-mixing.
Cover the batter and transfer it to the fridge to rest for at least one hour, or overnight.
After resting the batter, preheat the oven to 425℉ and line every other cup of two cupcake pans (this recipe makes 10-11 muffins). Fill the cups all the way to the top with batter and sprinkle with some additional sugar if desired.
Bake for 5 minutes at 425℉, then lower the oven temperature to 350℉ and continue baking for 17-18 minutes, or until a toothpick comes out clean (crumbs are okay).
Let the muffins rest for 5 minutes in the pans before removing to let cool.