Peanut Butter Butterscotch Bars

INGREDIENTS

Bars

heaping 1/4 cup creamy peanut butter

1/4 cup

unsalted butter, softened

1/4 cup

granulated sugar

1/4 cup

light brown sugar, packed

large egg

1 tsp

vanilla extract

1/2 cup

all-purpose flour

1/4 cup

quick-cooking oats (not old-fashioned whole rolled)

salt, optional and to taste

3/4 cup

butterscotch chips

Frosting

1 cup

confectioners’ sugar

1/3 cup

creamy peanut butter

1/4 cup

cream or milk (I used half-and-half)