Soft, chewy cookies with a buttery base, lightly sweetened and optionally enhanced with chocolate or nuts.
1 cup unsalted butter, softened
1/2 cup brown sugar, packed
1/4 cup granulated sugar
1 large egg
2 teaspoons vanilla extract
2 1/4 cups all-purpose flour
1/2 teaspoon baking soda
1/4 teaspoon salt
Optional: 1 cup chocolate chips, nuts, or cinnamon sugar
Chill dough for thicker cookies; add chocolate, nuts, or spices for variations.