Eating this pie is almost like eating frozen lemonade in graham-cracker crust.

Makes 10 servings

ACTIVE TIME: 40 minutes

TOTAL TIME: 4 hours (includes chilling and freezing)

EASE OF PREPARATION: Easy

2 large eggs
1 cup sugar, divided
1 tablespoon freshly grated lemon zest
2/3 cup lemon juice
6 tablespoons warm water
2 tablespoons powdered egg whites
Pinch of cream of tartar
1/3 cup whipping cream
1 9-inch reduced-fat graham cracker crust
Mint leaves and lemon slices for garnish

1. Whisk eggs and 2/3 cup sugar in a heavy, medium, nonreactive saucepan until smooth. Whisk in lemon juice. Cook over low heat, whisking constantly, until slightly thickened, 7 to 10 minutes. (Do not let mixture come to a simmer.) Pour through a fine-mesh sieve into a bowl. Stir in lemon zest. Place plastic wrap directly on the surface of the filling and refrigerate until thoroughly chilled, about 2 hours.
2. Combine warm water, powdered egg whites and cream of tartar in a mixing bowl. Stir gently until egg whites are dissolved, about 2 minutes. Beat with an electric mixer on medium-high speed until soft peaks form. Gradually add remaining 1/3 cup sugar, beating until stiff and glossy.
3.Beat cream in a small chilled bowl with chilled beaters with an electric mixer on medium speed until soft peaks form. (Alternatively, use a chilled wire whisk.)
4. With a rubber spatula, gently fold chilled lemon mixture into beaten egg whites; fold in whipped cream. Pour filling into crust and smooth the top. Freeze, uncovered, until firm, about 1 hour. Cover and freeze for at least 6 hours more.
5. Soften pie in the refrigerator for 20 to 30 minutes before slicing. Garnish with mint leaves and lemon slices.

NUTRITION INFORMATION: Per serving: 219 calories; 9 g fat (3 g sat, 4 g mono); 51 mg cholesterol; 32 g carbohydrate; 5 g protein; 0 g fiber; 154 mg sodium; 103 mg potassium.

2 Carbohydrate Serving

MAKE AHEAD TIP: Cover and freeze the pie for up to 1 week.