Mix oatmeal, cinnamon,nutmeg, salt, baking powder together thoroughly in a large bowl.

Beat eggs in medium bowl then mix in banana, maple syrup, stevia brown sugar, and vanilla stir until well combined. Then slowly whisk in oil and milk. Add liquid to oatmeal mixture and stir well.
Add the chocolate chips and nuts, stirring in well.

Spray a 12 hole muffin pan with cooking spray and evenly divide the oatmeal.

Bake in 350 degree oven for 25- 30 minutes or until lightly browned and moderately firm.
Cool in pan for 10 minutes then remove to wire rack and cool.
Muffins should be stored in airtight container in the refrigerator for up to 5 days.