Slice-and-Bake Oatmeal Raisin Chocolate Chip Cookies

unsalted butter, softened

light brown sugar, packed

granulated sugar

large egg

vanilla extract

old-fashioned whole rolled oats (not quick cook or instant)

all-purpose flour

whole wheat flour

baking soda

salt, optional and to taste

raisins (I used 1/4 cup regular raisins and 1/4 cup golden raisin medley from TJs)

semi-sweet chocolate chips