3 (1 oz. ea.) squares unsweetened chocolate
1/2 cup (1 stick) butter
1 cup sugar
1/3 cup Karo light corn syrup
1/4 cup all-purpose flour
1 tsp. vanilla
3 slightly beaten eggs
1 prepared chocolate crumb crust in pie pan

Melt butter and chocolate. Remove from heat and add sugar, Karo, flour and vanilla. Stir until well blended. Add eggs; blend. Pour into chocolate crumb crust. Bake at 350°F for 30 to 35 minutes.

Filling will be puffy, center fudgy but firm.