Combine wet ingredients in a smaller mixing bowl. Whisk to combine and then pour the liquid into the bowl with dry ingredients.
Stir everything together. If you’re using any optional mix-ins, add 1/2 cup to the batter and stir again. (Set 1/4 cup aside to sprinkle on top.)
Add approximately 1/3 cup to each lined muffin cup. I lightly oil my hands and smooth the tops a little because it makes the muffins prettier, but that’s totally optional. If you’re using optional mix-ins, sprinkle the remaining 1/4 cup over the top of the muffins.
Bake for 30-35 minutes, or until a toothpick comes out clean.
Allow muffins to cool until they are just barely warm (or room temperature) before serving.
Notes
Nutrition data is just an estimate. Values are calculated based on the use of butter (not coconut oil).