In a medium bowl, beat butter until smooth and creamy. Add Splenda Stevia and continue to beat. (Mixture may separate into little balls and then come back together again). Beat in egg and vanilla. Add 2 bananas and beat until incorporated.
In another small bowl, whisk together dry ingredients: flour, baking soda and baking powder. Beat dry ingredients into wet ingredients, scraping down the sides of the bowl as needed. Fold in chocolate chips.
Line a baking sheet with parchment paper. Scoop cookie dough into 1 ½ tablespoon scoops, 3 inches apart. Bake for about 8 minutes, or just until cookies are done (do not over bake). Set aside to cool, Then remove cookies and store in an airtight container, enjoying within 2 days.
Note
Use wheat flour instead of white for a more rustic delicious home-made cookie
Add chopped walnuts if desired
Batter may be made ahead of time and refrigerated overnight