Sweet Potato Cheddar Pierogi with Bacon Bits

Name: Sweet Potato Cheddar Pierogi with Bacon Bits
Prep time: 30 min
Cook time: 1 h
Total time: 1 h 30 min
Cuisine: European, American
Ingredients: 2 cups all-purpose flour; 1 teaspoon kosher salt; 2 tablespoons salted butter, melted; 1 cup plain full fat greek yogurt; 1 large egg; 2 medium sweet potatoes; 2 tablespoons salted butter; 1 1/2 cups shredded sharp cheddar cheese; 1 teaspoon garlic powder; kosher salt and black pepper; 6 slices thick cut bacon, finely chopped; 6 tablespoons salted butter; 1 tablespoon chopped fresh rosemary; chili flakes