INGREDIENTS
1 cup
warm water (110°F)
2 1/4 tsp
(1 packet) instant yeast
4 cups
all-purpose flour, plus more for dusting
1
medium russet potato (7 to 8 ounces)
1 stick
unsalted butter, at room temperature
1/4 cup
sugar
1 1/2 tsp
kosher salt
1 tsp
mustard powder
2
large eggs, at room temperature
2 cups
grated sharp cheddar cheese, divided
2 tbsp
melted butter