Preheat oven to 350F. Line a large size muffin tin with paper muffin liners. You can also use a regular size muffin tin and it will make around 8 muffins.
Combine all of the ingredients (except the chocolate chips) in a high powered blender or food processor.
Scoop the batter into each muffin cavity. Fill the muffin tin until the batter comes just under the top surface.
Sprinkle about 1 tablespoon of chocolate chips over each muffin (optional).