For the pie crust:
1-1/4 cup gf flour
6 Tablespoons cold unsalted butter, cut into small pieces
2 Tablespoons cold vegetable shortening
1/4 teaspoon salt
4 Tablespoons ice water, or more as needed
For filling:
1 lb. cream cheese, softened
3/4 cup fresh lime juice
1 14-oz. can condensed milk (sweetened)
1 teaspoon finely grated lime zest
1/2 cup confectioners’ sugar (sifted), divided
1 cup
creme fraiche1 lime cut into thin slices for garnish