In a large bowl mix oatmeal, flour, baking powder, baking soda, cinnamon, nutmeg, salt and sugar together.
1 ½ Cups oats, 1 ¼ Cups flour, ½ cup sugar, 1 ½ teaspoon baking powder, 1 teaspoon baking soda, 1 teaspoon cinnamon, pinch ground nutmeg, ¼ teaspoon salt
In a smaller bowl mix egg, oil and vanilla. Add to dry ingredients and stir. The mixture will be very dry at this time.
1 whole egg, ¼ cup oil, 1 teaspoon vanilla
Fold in bananas. Keep folding until all the dry ingredients are mixed in.
1 ½ cups ripe bananas, mashed
Divide into muffin tin that has been either lightly sprayed with a nonstick spray or lined with paper liners.
In another bowl combine topping ingredients. Sprinkle over muffin batter.
½ cup oats, ¼ teaspoon cinnamon, 2 Tablespoons brown sugar, 2 Tablespoons melted butter
Bake at 375°F for 18-20 minutes.
Video
Notes
Use very ripe bananas. The peel should have lots of brown spots and the bananas should mash easily.
When measuring flour, don't overpack the measuring cup. Fluff up flour with a spoon or scoop, and then gently scoop it into the measuring cup and then level the cup.
The batter may be a bit dry if bananas are not fully ripe.
If batter is too dry add 1-2 tablespoons of milk.
Use old fashioned oats or quick oatmeal. Steel cut oats do not work for this recipe.
The old fashioned oats will add texture to the muffins.