Double Chocolate Cookie Bars - cooking recipe

Ingredients

2 c. finely crushed, cream-filled chocolate sandwich cookies (24 cookies)
1/4 c. margarine, melted
2 c. (12 oz.) semi-sweet chocolate chips
1 (14 oz.) can condensed milk
1 tsp. vanilla extract
1 c. chopped walnuts

Preparation

Combine crumbs and margarine; press firmly on bottom of a 13 x 9-inch baking pan.