unsalted

I got this recipe off somebody else's answer to another's question. INGREDIENTS: 2 3/4 cups flour 1 teaspoon baking soda 1/2 teaspoon baking powder 1 cup butter, softened 1 1/2 cups white sugar 1 egg 1 teaspoon vanilla extract DIRECTIONS: Preheat oven to 190 degrees C (374 degrees F)In...