½ teaspoon baking soda
1½ cups semisweet chocolate pieces
4 teaspoons vegetable shortening
1/3 cup chopped peanuts, optionalInstructions
Preheat oven to 350º. Beat brown sugar, peanut butter, and butter until fluffy. Blend in water, egg, and vanilla. Combine oats, flour, and baking soda; add to peanut butter mixture and mix well. Shape into 1-inch balls. Place on an ungreased cookie sheet. Using bottom of a glass dipped in sugar, press into ¼-inch-thick circles. Bake eight to 10 minutes or until edges are golden brown. Remove to wire racks; cool completely.
In a saucepan over low heat, melt chocolate pieces and shortening, stirring until smooth. Top each cookie with ½ teaspoon melted chocolate; sprinkle with chopped peanuts. Chill until set. Store tightly covered.