This sweet and tangy Key Lime Pie has a graham cracker crust and a smooth and creamy filling made with key lime juice, sweetened condensed milk, and protein-rich Greek yogurt. It's a deliciously refreshing, not-too-sweet pie with a light and airy texture that just melts in your mouth.
Combine condensed milk, key lime juice, Greek yogurt, and lime zest in a bowl; mix well. Pour into graham cracker crust; place pie on a baking sheet.
Bake in the preheated oven for 8-10 minutes, until tiny pinhole bubbles burst on the surface of the pie. The filling will be wobbly but not browned.
Transfer pie to a wire rack to cool, then thoroughly chill pie in the refrigerator before serving, about 1 hour. Garnish with lime slices and whipped cream. Slice and enjoy!