Strawberry Margarita Squares

1 1/4 c. crushed pretzels

1/4 c. butter or margarine, melted (I use a little more)

1 can sweetened condensed milk

1 c. pureed strawberries

1/2 c. lime juice

8 oz. cool whip

Mix pretzel crumbs and butter in 13x9 pan. Press firmly on bottom of pan. Refrigerate until ready to fill. Mix sweetened condensed milk, strawberries and lime juice in large bowl until well blended. Gently stir in cool whip. Pour over crust. Freeze 6 hours or overnight. Let stand 15 minutes before serving.