In large mixing bowl, combine sugar, salt, egg and milk.
Add peanut butter, mixing well.
Stir in flour, baking powder and marshmallow creme until well blended.
Pour preserves onto batter.
Cut through batter gently with spatula to marble.
Pour into greased and floured 9x5-inch pan.
Sprinkle with peanuts.
Bake at 350° for 60 to 70 minutes.
Remove from pan immediately; cool on wire rack.