2 lg. boxes Jello
1/2 pt. sour cream
1/2 pt. heavy cream
1/2 c. sugar
1 1/2 pkg. Knox gelatin
1 tsp. vanilla

Mix 1 package Jello with 1 1/2 cups boiling water. Pour into 13 x 9 inch pan. Refrigerate until firm. Bring heavy cream to a boil. Add sugar. Dissolve sugar by stirring and add gelatin (Knox), stirring again until dissolved. Remove from heat and cool. Add sour cream and vanilla. Pour over first layer in pan. When firm, repeat same directions with second box of Jello. Refrigerate until firm and cut into squares.