1/2 c. butter
3/4 c. water
1 1/2 (1 oz.) squares unsweetened chocolate
2 c. flour
2 c. sugar
1 tsp. baking soda
1/2 tsp. salt
2 eggs, beaten
1/2 c. sour cream
1 (8 oz.) cream cheese
1/3 c. sugar
1 egg
1 (6 oz.) pkg. chocolate chips

Combine butter, water, and chocolate in saucepan; bring to a boil. Remove from heat. Stir in combined flour, sugar, salt, and soda. Add eggs and sour cream. Mix well. Pour into greased and floured 15 x 10 x 1 inch jelly roll pan. Combine cream cheese and sugar, mixing well. Blend in egg. Spoon over chocolate batter. Cut through batter with knife, several times for marble effect. Sprinkle with chocolate chips.

Bake at 375 degrees for 25 to 30 minutes.