Trail Mix Protein Bar Cookies

 cup unsalted butter, softened (1 stick)

light brown sugar, packed

large egg

vanilla extract

all-purpose flour

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

cornstach

baking soda

salt, optional and to taste

about 4.25 ounces protein bars, diced small (about 1 scant cup)

dried cranberries

pumpkin seeds (or use sunflower seeds, slivered almonds, etc.)

raisins