1/2 c Peanut butter 1/4 c Margarine or butter, -softened 3/4 c Sugar 1 Egg, beaten 1/2 c All-purpose flour 1/2 t Baking powder 1/4 t Salt (opt) 2 c Rice CHEX brand cereal, -crushed to 1 cup Preheat oven to 350'F. Lightly grease cookie sheet. In large bowl, cream peanut butter, margarine and sugar. Add egg. Stir in flour and baking powder; add salt, if desired. Stir in cereal; mix well. For each cookie, roll 1 level tablespoon dough into ball. Place on prepared cookie sheet. With fork dipped in sugar, flatten slightly in criss-cross pattern. Bake 8-10 minutes or until bottoms are lightly browned. Let stand 1 minute before removing from cookie sheet. Cool on wire rack. Makes 2 1/2 dozen cookies.