Combine graham cracker crumbs, butter, sugar and salt, mix well and press into 9-inch-diameter pie pan with 1 1/2-inch-high sides.
Bake until edges begin to darken, about 8 minutes. Cool completely.
Assembly
Layer the softened strawberry ice cream into the crust. Freeze for 30 mins. Layer the vanilla ice cream on top. Freeze until firm (1 hour+).
Sauce
Simmer the strawberries, their juice, lemon juice, and sugar in a small saucepan for 8 minutes until slightly thickened.
Chill completely before serving.
Topping
Whisk egg whites, sugar, and cream of tartar in a heatproof bowl over a pot of simmering water until the sugar dissolves and it reaches 160°F. Remove from heat and whip on high speed until stiff, glossy peaks form (about 5-7 minutes). Blend in vanilla.
Spread the glossy meringue over the frozen ice cream. Optional: Use a kitchen torch to lightly toast the meringue for a beautiful "Toasted Marshmallow" look. Freeze until ready to serve, and top with the chilled strawberry sauce!