Makes 12 bars

1/2 cup (1 stick) margarine/butter, room temperature
1/2 cup granulated sugar
1/2 cup packed brown sugar
1/2 cup plus 1/4 cup creamy peanut butter
1 large egg
1 teaspoon vanilla extract
1 cup all-purpose flour
1 teaspoon baking soda
1/4 teaspoon salt
1/2 cup old fashioned oatmeal
1 cup butterscotch chips, chocolate chips or peanut butter chips
1 cup confectioners’ sugar
4 tablespoons soymilk or milk

Preheat the oven to 350 degrees F. Grease a 9-by-13-by-2-inch baking dish.

Using an electric mixer, cream the margarine/butter, granulated sugar, brown sugar and 1/2 cup of the peanut butter. Add the egg and vanilla. Sift the flour with the baking soda and the salt. Mix the oatmeal into the flour and stir the flour into the creamed mixture. Spread the batter in the baking pan. Sprinkle the butterscotch chips over the batter and bake for 20 to 25 minutes, until browned around the edges.

Whisk together the confectioners’ sugar, soymilk and the remaining 1/4 cup of the peanut butter until smooth, then spread the glaze evenly over the warm bars. Cool completely before cutting into squares.