I've tried this recipe a couple of times and it can do without the Chocolate Filling. However, the walnuts in the filling do add some crunch into it. So it really depends - if you love nuts then put in the Chocolate Filling.
Cake:1 3/4 cups all-purpose flour
1 1/2 cups sugar
1 1/4 tsps. baking soda
3/4 cup margarine/butter
4 squares unsweetened chocolate, melted and cooled
1 1/4 cups water
1/4 tsp. baking powder
1 1/2 tsps. vanilla
4 eggs
Syrup:1/4 cup sugar
1/3 cup water
3 tbsps. Kirsch or brandy
Chocolate Filling:2 100-gm bars milk chocolate
3/4 cup butter
3 tbsps. confectioners' sugar
1 cup chopped walnuts
Cream Filling:2 250-gm packs whipping cream
1/3 cup confectioners' sugar
Maraschino cherries
1 100-gm bar milk chocolate for decoration
1. Preheat oven to 350 deg. F.
2. Grease and line four 9-inch round layer pans. Set aside.
3. Combine the first 8 ingredients in a mixer bowl. Beat at medium speed for 3 minutes.
4. Add eggs one at a time beating continually until completely blended.
5. Pour into prepared pans and bake for 10 to 15 minutes.
6. Cool slightly then remove from pans; transfer onto wire racks and cool thoroughly.
7. In a small saucepan, prepare syrup by blending sugar and water together. Bring to a boil. Lower flame and simmer for 1 minute.
8. Remove from fire and stir in Kirsch or brandy. Set aside.
9. Prepare Chocolate Filling: Melt two bars chocolate over double boiler. Cool. Cream butter; beat in melted chocolate; add confectioners' sugar; continue beating until smooth. Stir in nuts.
10. Beat whipping cream until thick. Gradually add confectioners' sugar and continue beating until smooth and fluffy. Set aside.
11. To Assemble: Place one cake layer on a serving platter. Brush top of cake with syrup. Spread half of the chocolate filling. Sprinkle some nuts. Top with another layer of cake, again brush top with syrup.
12. Spread half of the cream filling. Sprinkle with more nuts and some cherry slices. Repeat procedure for the last two cake layers. Cover the top and sides of the cake and the remaining cream.
13. Decorate with chocolate curls and cherries. Chill until ready to serve.