Oreo Crunch Bars

34 Oreo cookies, divided

1/4 cup butter or margarine, melted

1 - 7 1/2 ounce jar marshmallow creme

1/2 cup semisweet chocolate chips

1/3 cup walnuts, chopped

Coarsely chop 8 cookies; set aside.

Finely crush remaining 26 cookies. Mix finely crushed cookies and butter in a bowl. Press firmly on bottom of greased 8x8x2 or 9x9x2 inch baking pan.

Dollop marshmallow creme over crust to within 1/2 inch of edges.

Sprinkle chips, nuts and chopped cookies over marshmallow layer, pressing gently.

Bake at 350° F. for 15 to 18 minutes or until marshmallow creme puffs slightly.

Cool completely in pan on wire rack. Cut into triangles or squares to serve.