>> source: https://www.marthastewart.com/356005/key-lime-pie

Heat oven to 375°F. Combine @graham cracker crumbs{1.5%cups}, @melted unsalted butter{6%Tbsp}, and 3 tablespoons @granulated sugar{5%Tbsp} in a #medium bowl{}; mix well. Press into a #9-inch pie plate{}, and bake until lightly browned, about ~{12%minutes}. Remove from oven, and transfer to a #wire rack{} until completely cooled.

Lower oven to 325°F. In a medium bowl, gently whisk together @sweetened condensed milk{1%14-oz can}, @egg yolks{4%large}, @Key lime juice{1/2%cup}, and @key lime zest{1%Tbsp}. Pour into the prepared, cooled crust.

Return pie to oven, and bake until the center is set but still quivers when the pan is nudged, 15 to ~{17%minutes}. Let cool completely on a wire rack.

Shortly before serving, combine @heavy cream{1.5%cups} and remaining 2 tablespoons sugar in the bowl of an #electric mixer{} fitted with a whisk attachment. Whisk on medium speed until soft peaks form, 2 to ~{3%minutes}. Spoon over cooled pie; garnish with zest. Serve immediately.