Combine cereal and milk in a bowl; let stand 2 min. Or til cereal is softened. Stir in eggs and oil. Combine flours and next 5 ingred. In lg. Bowl; stir in onion. Make a well in center of mixture; add cereal mixture, stirring just til moistened. Spoon into greased muffin pans, filling 3/4 full. Bake at 400 for 18 min., or til golden brown. Remove from pan immediately. Makes 1 dozen.