Make the dough in a food processor by adding all the ingredients and slowly pouring in the cold water until a dough forms

Roll the dough out between two sheets of parchment paper

Let the dough cool in the fridge for at least 20 minutes

Toss the sliced apples with sugar and vanilla

Preheat your oven to 200C

Arrange the apples on the dough, leaving at least 4 cm at the edges

Fold the edges over

Brush the galette with a beaten egg and sprinkle with brown sugar

Bake for 50-60 minutes

Serve with vanilla ice cream on top