CRUST:

1/4 c. butter, melted
1 c. vanilla wafers, crushed
1/2 c. pecans, finely chopped

Mix together butter, wafers and pecans. Reserve 1/4 cup of mixture. Press remaining mixture into greased, 9-inch pie pan. Bake crust and reserved crumbs (in small pan) at 350 degrees for 15 minutes.

FILLING:

3 squares unsweetened chocolate
1 c. butter
1 1/2 c. sugar
4 lg. eggs
2 tsp. vanilla

Melt chocolate and let cool. Cream butter and sugar; add cooled chocolate. Add eggs to filling, one at a time, beating 5 minutes at medium speed after each addition. Stir in vanilla. Turn into pie shell. Sprinkle with toasted crumbs. Freeze until serving.