Beat first 3 ingredients at medium speed with an electric mixer until fluffy. Add egg, beating until blended.
Add flour and next 4 ingredients, beating until blended. Stir in rice cereal, coconut, and pecans.
Drop by tablespoonfuls onto lightly greased baking sheets.
Bake at 350° for 10 minutes or until lightly browned; remove to wire racks to cool.