Combine gluten free flour, potato starch, salt, baking powder and xanthan gum in a bowl. Whisk until evenly mixed. Set aside.
Beat eggs in the small bowl of an electric mixer.
Add dry ingredients and beat until evenly combined.
Add the cream and beat for 2-3 minutes. Let batter rest for 30 minutes.
Preheat oven to 425°F.
Generously grease a muffin tin. Heat muffin tin in preheated oven for 5 minutes.
While the pan is heating beat the batter again. Transfer to a large measuring cup.
Remove muffin tin from the oven and immediately pour batter into the pan. Bake in preheated oven 15 minutes or until puffy and golden brown.
Serve with roast beef and gravy. Use leftovers the next day to make roast beef sliders.
Makes 9-12 Yorkshire puddings.