First, preheat the oven to 350F.
Next, prepare your muffin pan by lining with paper liners. If you don't have muffin cups, spray the muffin tray with nonstick spray.
Then, combine all of the dry ingredients in a large bowl.
Combine, all of the wet ingredients in another bowl. I like to use a 4 cup measurer for this.
Then add half the dry ingredients into the wet, and mix until combined. Add the remaining dry ingredients.
Once combined, add your optional mix in's.
Pour batter in to prepared muffin tin. I like to use an ice cream scoop or 1/3 cup measuring cup to ensure they're all the same size.
This is a good time to add more optional mix in's to the top of the muffins! OR, skip mixing them in and just add a few for interest on top! This is what they do at the coffee shop with caster sugar. They sprinkle it on top for extra crunch!
Slide the tray onto the center rack of the oven. Be sure it's a preheated oven!
Set timer for 20 minutes or until a toothpick comes out clean.
Let them cool down on a wire rack and store in the fridge in an airtight container for up to a week!