Palm Springs Key Lime Pie

Name: Palm Springs Key Lime Pie
Ingredients: 3/4 cup crushed vanilla wafers or 3/4 cup vanilla cookie crumbs; 3/4 cup crushed graham wafers or 3/4 cup graham wafer crumbs; 1/2 cup finely chopped pecans; 1/4 cup margarine or 1/4 cup butter; vegetable oil cooking spray; 1 tablespoon all-purpose flour; 4 large eggs, separated; 1/2 cup freshly squeezed lime juice; 2 teaspoons lime zest; 10 1/2 fluid ounces sweetened condensed milk (Borden Eagle Brand suggested); 4 drops green food coloring; 1/4 teaspoon cream of tartar; 1/2 cup granulated sugar; 1/2 cup whipping cream; 1/2 teaspoon vanilla extract; 1/4 cup granulated sugar