Ingredients
Method
- Preheat the oven to 350 F. In a medium bowl, whisk together flour, salt, and baking soda. In a large bowl, mix butter, mashed banana, and sugar until fluffy. Add in the egg and vanilla extract until smooth.
- Add in the flour mixture and mix until it is fully combined. Evenly spread the cookie dough into a greased 8-inch square baking dish. Bake for 20-25 minutes.