CRUST:

1 1/2 c. crushed pretzels
1/4 c. melted butter
1/4 c. sugar

FILLING:

3/4 c. peanut butter
1 (4 oz.) container Cool Whip
1 qt. chocolate ice cream, softened

Mix pretzels with melted butter and sugar. Press firmly against bottom and sides of buttered 9 inch pie pan. Bake 10 to 12 minutes and cool. Fold peanut butter and whipped topping into ice cream and spread evenly over crust. Cover and freeze until firm.