2½ cups all-purpose flour 2 tablespoons granulated sugar ¾ teaspoon fine sea salt 2½ sticks (10 ounces) cold unsalted butter, cut in ½-inch pieces 5-8 tablespoons ice water ...

Enter sour cream, which makes the dessert even creamier while simultaneously preserving the classic key lime pie flavors we all know and love. It might sound unusual to put sour cream into a dessert.

Grease a pie dish with butter ... Toss them into a bowl with a small scattering of sugar and the soured cream, then mix with your hands until everything is well amalgamated.