1Heat oven to 450°F. Make pie crust as directed on box for One-Crust Baked Shell using 9-inch glass pie pan. Bake 9 to 11 minutes or until lightly browned. Cool completely, about 30 minutes.
2Meanwhile, in 1-quart saucepan, combine gelatin, 1/2 cup of the sugar, the lime juice, water and egg yolks. Cook over medium heat 6 to 7 minutes, stirring constantly, until mixture boils and thickens slightly. Remove from heat; stir in lime peel and food color. Pour mixture into large bowl. Refrigerate until mixture mounds slightly, about 45 minutes.
3In large bowl, beat egg whites with electric mixer on high speed until soft peaks form. Gradually add remaining 1/2 cup sugar, beating until stiff peaks form. In small bowl, beat whipping cream until stiff peaks form.
4Gently stir egg whites and whipped cream into cooled lime mixture. Spoon into cooled baked shell. Refrigerate until firm, about 2 hours. Serve topped with sweetened whipped cream. Store in refrigerator.