In a medium bowl, mix together the flour, baking soda, and salt. Set aside.
In a large bowl, cream together the butter, brown sugar, and white sugar until smooth. Beat in the egg, then stir in the mashed bananas and vanilla. Gradually blend in the dry ingredients.
Stir in the oats and nuts. Drop by spoonfuls onto ungreased cookie sheets.
Bake for 12 to 15 minutes in the preheated oven. Allow cookies to cool on baking sheet for 5 minutes before transferring to a wire rack to cool completely.
Interesting Facts
Oatmeal is a great source of fiber and protein.
Bananas are a great source of potassium and magnesium.
Nuts are a great source of healthy fats and protein.
These cookies are a great way to get your daily intake of fruits and nuts!