For crust:
1/2 cup, plus 2 Tablespoons gf flour
1/2 cup cornstarch
Dash of salt
1 stick of cold unsalted butter, cut into pieces
1/2 cup gf cream cheese
1 teaspoon lemon juice
For tart:
2 heads swiss chard
1 cup
creme fraiche5 Tablespoons milk
1 egg and 4 egg yolks
3/4 cup gruyere, grated
1/4 teaspoon cayenne pepper
Salt and freshly ground pepper