Make Easiest Ever Pastry Dough.
Return pan to medium, add cream (it will bubble up) and whisk until smooth, slightly thickened and a deep amber color, about 1 minute. Pour caramel over nuts; transfer pie to oven. Bake until gently bubbling, 10 to 15 minutes.
Transfer to wire rack to cool. Sprinkle with flaked sea salt if desired.
