Preheat oven to 350F. Cream margarine and pudding mix until light and fluffy; beat in egg. Gradually add flour at low speed until well mixed, and soft dough forms. Shape into 1" balls, roll in sugar. Place 2" apart on ungreased cookie sheets. Make imprint in middle with thumb. Bake at 325F for 15-18 minutes. Remove from cookie sheet and cool. Fill each cookie with 1/2 teaspoon preserves. Melt together chocolate chips and butter; stir until smooth. Drizzle over cookies. Yields 4 dozen.