Combine the flour, oats, sugar, baking powder, soda, and salt in a large mixer.
Then, beat the egg in and stir in creamer, oil, and vanilla. Once this is well mixed add in the banana and combine.
Spray a mini muffin pan or a regular muffin pan with non stick baking spray. These pans can also be lined with paper baking cups if wanted. They will make 24 mini muffins or 12 regular size muffins.
If making regular sized muffins bake these at 400* for 18-20 minutes.
If making mini muffins bake at 400* for 10-15 minutes or until using a toothpick and poking in the center the toothpick comes out clean.