Ingredients

1 1/4 cups sugar 

1/4 cup unbleached all-purpose flour 

4 large egg yolks, lightly beaten 

2 large whole eggs, lightly beaten 

6 tablespoons unsalted butter, melted and cooled 

1 cup buttermilk 

1/2 cup heavy cream 

2 teaspoons grated lemon zest 

1 teaspoon pure vanilla extract 

One 9-inch Prebaked Pie Crust 

Preparation

Preheat the oven to 325 degrees.

Combine sugar and flour in a large bowl. Add yolks and eggs, and whisk to combine. Whisk in butter, buttermilk, cream, zest, and vanilla until thoroughly combined. Pour into baked crust. Bake until filling is set but still wobbly, 45 to 55 minutes. Let cool to room temperature before serving.