CINCO DE MAYO FROZEN MARGARITA PIE

CINCO DE MAYO FROZEN MARGARITA PIE Crust: 1 cup finely crushed pretzels 1/4 cup white sugar 1/3 cup margarine, melted Filling: 1 (14 ounce) can sweetened condensed milk 1/3 cup frozen limeade concentrate, thawed 2 tablespoons tequila 1 tablespoon orange liqueur 3 drops green food coloring, or as needed (optional) 1 cup heavy whipping cream 1 lime, sliced (optional) Preheat oven to 375 degrees F (190 degrees C). Mix pretzels and sugar together in a bowl; stir in margarine until evenly incorporated. Spoon mixture into a 9-inch pie plate; press into bottom and up sides of plate to form a firm, even crust. Bake crust in the preheated oven until edges are lightly browned, about 5 minutes. Cool on a wire rack. Mix sweetened condensed milk, limeade concentrate, tequila, orange liqueur, and green food coloring in a large bowl. Beat cream in a glass or metal bowl until soft peaks form. Lift your beater or whisk straight up: the whipped cream will form soft mounds rather than a sharp peak. Fold whipped cream into sweetened condensed milk mixture. Spoon filling into cooled crust. Cover pie with plastic wrap and freeze until firm, about 4 hours. Let stand for 10 minutes before serving; garnish with lime slices.