Preheat your oven to 400 degrees. Lightly grease your mini muffin pan.
Put all the ingredients into a blender except the chocolate chips (if using) and blend until well mixed. Stir in chocolate chips.
Pour batter into muffin pan. Drop a couple of chocolate chips onto the top of each muffin.
Bake 8-9 minutes. Muffins will puff up quite a bit but will level after cooling.
