This recipe is one my Dad really enjoyed.

1 1/2 c. graham cracker crumbs
1/4 c. sugar
6 tbsp. butter, melted
1 (14 oz.) can sweetened condensed milk
1/3 c. lemon juice
2 (8 oz.) containers plain yogurt
2 c. mini-marshmallows
1/2 c. chopped pecans
1 pt. fresh strawberries, sliced
1 c. fresh blueberries

Combine crumbs, sugar and butter; press into 12 x 7 dish. Combine milk, lemon juice, yogurt, marshmallows and nuts. Spread half the mixture over crust. Top with half the berries, remaining yogurt mixture, then remaining berries. Cover; freeze 6 hours. Makes 8 to 10 servings.