Banana Split Dessert

In a medium bowl combine the graham cracker crumbs, butter, and sugar. Remove 1/2 cup of mixture; set aside. Press remaining crumb mixture over the bottom of 15 x 10 x 1-inch baking pan to form crust.

Cut bananas crosswise into 1/2-inch slices; arrange in a layer over the crust.

Slice ice cream into 9 slices; arrange on top of banana slices.

Sprinkle chopped walnuts over top; freeze until the ice cream is firm.

In a heavy saucepan combine chocolate pieces and 1/2 cup butter. Cook and stir over low heat until melted. Stir in powdered sugar and evaporated milk; cook until mixture is thick and smooth, stirring constantly. Remove from heat; stir in vanilla. Let stand at room temperature until cool.

Pour the cooled chocolate mixture over the frozen mixture; freeze until chocolate layer is firm.

In a medium bowl, whip cream until stiff peaks form; spread evenly over chocolate layer. Sprinkle with reserved crumbs. Cover and freeze.

Before serving, let stand at room temperature about 15 minutes.