INGREDIENTS
Filling:
1 lb
russet potatoes, peeled and sliced 1/2 inch thick
Salt and pepper
4 oz
sharp cheddar cheese, shredded (1 cup)
2 tbsp
unsalted butter
Dough:
2 1/2 cups
bread flour
1 tsp
baking powder
Salt
1 cup
sour cream
1
large egg plus 1 large yolk
Topping:
4 tbsp
unsalted butter
1/2 tsp
salt