Pierogies With Brown Butter

Name: Pierogies With Brown Butter
Prep time: 30 min
Cook time: 55 min
Total time: 1 h 25 min
Cuisine: European, Mediterranean, Greek
Ingredients: 2 cups all-purpose flour; 1 teaspoon kosher salt; 2 tablespoons butter, melted; 1 cup sour cream; 1 egg; 2 medium russet potatoes, peeled and cubed; 1 cup sharp cheddar cheese, shredded; 2 tablespoons butter, melted; 1 teaspoon kosher salt; ¾ teaspoon black pepper; ½ teaspoon garlic powder; 8 tablespoons butter, unsalted; 1 teaspoon kosher salt; 6 cups spinach