Start by preheating the oven to 350 degrees F.
Line a mini muffin tin with mini muffin liners. I like to use two per muffin to help the muffin get out of the tin easier.
Add the dry ingredients to the mixing bowl and combine with a spoon or a whisk.
Add the wet ingredients into the dry ingredients using a whisk.
When fully mixed, fold the walnuts into the mixture.
Then, use a tablespoon to fill the mini muffin liners. Overfill the muffins as they don't rise that much. In order to get a muffin top, you must overfill the wrapper.
Bake for 13 minutes on the center rack of the oven.
Remove the muffins from the oven and let them cool in the pan on top of a cooling rack for 10 minutes.
The muffin liners come off easier if they are allowed to cool for longer.