Mix all ingredients except the chocolate chips together, and let sit while you prepare the muffin pans.
Spray a muffin pan and/or liners with with non-stick spray.
Stir the chocolate chips into the oatmeal batter.
Divide batter into 15 muffin cups. They should be just about filled.
Bake 20-30 minutes, you’ll see the edges just starting to brown and they will be firm to the touch.
The muffins may stick when hot but are removed easily when cooled for a bit.