Thoroughly combine mashed fruit and yogurt in a bowl.
Fold in whipped topping, blending well.
Spoon into crust and freeze about 4 hours.
Remove from freezer and place in refrigerator 30 minutes before serving (solidly frozen pie require more time in refrigerator for softer texture).
Store leftover pie in the freezer.
Other fruits with matching yogurt:
1/2 cup mashed blueberries or raspberries
1 can (8 oz) sliced peaches or apricot halves, drained
1 can (8oz) crushed pineapple, drained
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