Ingredients
For the dough:
1 1/2 cups all-purpose flour
1 cup mashed potatoes (smooth, no lumps)
1 tsp sugar
1/2 tsp salt
1/4 cup milk (warm)
1 tsp instant yeast
2 tbsp unsalted butter (softened)
For the filling:
1 cup shredded mozzarella cheese
1/4 cup grated Parmesan cheese
1/2 tsp garlic powder (optional)
1 tbsp chopped parsley or green onions (optional)
For topping:
1 egg (beaten, for egg wash)
Sesame seeds or grated Parmesan (optional)