Chocolate Dream Tart

1/3 cup butter or margarine, softened
1 cup all-purpose flour
1 egg
1 tablespoon butter or margarine
1 can(14 oz) sweetened condensed milk
1 bag (12 oz) semisweet chocolate chips(2 cups)
1/2 cup chopped walnuts
1 teaspoon vanilla
Unsweetened whipped cream, if desired

1) Heat oven to 400F, In medium bowl, cut 1/3 cup butter into flour, using pastry blender (or pulling 2 table knives through ingredients in opposite directions), until mixture is crumbly. Stir in egg until dough forms. Press firmly and evenly against bottom and side of ungreased 9-inch tart pan with removable bottom. Bake 12 to 15 minutes until golden brown, cool on wire rack.

2) Reduce oven temperature to 350F, In 2-quart saucepan, melt 1 tablespoon butter over low heat. Stir in milk and chocolate chips. Cook over low heat, stirring occasionally until chocolate is melted. Stir in ealnuts and vanilla. Spread in baked crust.

3) Bake about 25 minutes or until edge is set but chocolate appears moist in center. Cool completely in pan on wire rack, about 1 hour. To serve, top each slice with whipped cream.

NEW TWIST
To show off this wonderfully rich dessert, garnish with chocolate curls or dip ends of toasted walnut halves into melted chocolate and place on each serving with dollop of whipped cream.

Make-Ahead Magic
To make ahead, tightly cover the completely cooled tart and refrigerate up to 3 hours or freeze up to 2 months. About 1 hour before serving, unwrap frozen tart and let stand at room temperature to thaw.