Surprise bran muffins

1. Combine cereal and milk, let stand 2 minutes.
2. Add margarine and egg; mix well.
3. Add combined dry ingredients, mixing just until moistened.
4. Spoon into greased medium-sized muffin pan. Make a deep indentation in top of batter for each muffin.
5. Fill with preserves.
6. Bakei at 400 °F for 25 minutes.
7. Makes 1 dozen.