Preheat oven to 350 degrees F and line a muffin tin with paper liners or grease with olive or coconut oil
In a medium mixing bowl, add the eggs and beat well. Then add all of the wet ingredients and stir together.
In a separate large mixing bowl, add all of the dry ingredients and whisk together so there are no clumps. Add the wet ingredients to the dry ingredient bowl and stir until well combined.
Add in any desired mix-ins.
Spoon the batter into the muffin pan. Bake for 20-25 minutes, or until golden brown on the top.
Allow the muffins to cool in the tin for a few minutes before transferring to a wire rack to cool completely.