Some days you want a cookie, and the pantry has nothing to offer but a few bananas and a bag of oats. Good news: that is nearly enough. These soft, chewy lemon oatmeal cookies use four simple ingredients, with no flour, eggs, refined sugar, dairy, butter or oil. Ripe banana holds everything together, dates add natural sweetness, oats give body, and fresh lemon brings a bright, zesty lift. They come together in one bowl and are ready in about 30 minutes. Here is a simple way to make them at home.