In a large mixing bowl, beat lemonade concentrate for about 30 seconds until smooth. gradually spoon in frozen yogurt and blend. Fold in whipped topping until smooth. Freeze, if necessary, until mixture will form mounds. Spoon into pie crust and freeze until firm, at least four hours.
Store any leftover pie lightly covered in freezer.
Your Shirl's Citrus Pie is ready. Good luck!
Related recipes: Dessert, Lemon, Frozen, Low-fat
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