-1/2 cup chopped nuts (walnuts, pecans, or almonds work well) Start by preparing the unfed sourdough starter, then cream together softened butter and brown sugar. Blend in an egg, vanilla extract, and the sourdough starter, followed by a mixture of oats, flour, baking soda, cinnamon, and salt. For the final touch, fold in chopped nuts—walnuts, pecans, or almonds work wonderfully—along with optional raisins or chocolate chips. Drop tablespoons of dough onto prepared baking sheets and bake at 350°F until golden brown. After cooling, savor the delightful blend of tangy sourdough, comforting oats, and the nutty crunch in each delicious bite of these cookies!