Banana Oatmeal Walnut Cookies

I cannot get enough banana these days, although not in its whole state. It's banana baked goods that I cannot stop thinking about! I guess this is a better thing to be craving than chocolate... These not-too-sweet cookies turned out to be a great mid-morning sweet snack at work. Their soft texture is balanced out by the crunch and chew of the walnuts and oats.

Ingredients
1 1/2 cups flour
1/2 teaspoon baking soda
1/2 teaspoon salt
1/2 cup butter, softened
1/2 cup sugar
1/2 cup brown sugar, packed
1 egg
1/2 teaspoon vanilla extract
1 medium banana, mashed
1 cup oats
1/2 cup walnuts, chopped

Instructions
Whisk together flours, salt, and baking soda in a small bowl; set aside.
Put butter and sugars into a bowl and cream together until pale and fluffy. Add egg and vanilla; mix until combined. Mix in banana. Add flour mixture and stir until just combined. Stir in oats and walnuts.
Refrigerate dough for 15 minutes.
Preheat oven to 375 degrees.
Drop dough onto prepared baking sheets. Bake cookies until golden (about 12 minutes).
Yields 2 Dozen