This will help stop the pastry from shrinking in the oven Add the melted butter and buttermilk ... the pumpkin puree mixture into cooked and cooled pastry case Ask a grown up to put the pie ...
Add the buttermilk, lemon juice, lemon zest, vanilla, and pinch of salt and mix to combine. Carefully pour the filling into the crust. Bake until the edges and center of the pie are set completely ...