Swedish Cardamom Buns

Name: Swedish Cardamom Buns
Prep time: 2 h 30 min
Cook time: 25 min
Total time: 2 h 55 min
Cuisine: European
Ingredients: 1 and 1/4 cup warm water (105-110 F); 3/4 stick unsalted butter (melted and cooled slightly); 6 tbsp sugar; 4 and 1/2 tsp active dry yeast; 3 large eggs (beaten lightly); 1 and 1/2 tsp salt; 1/4 cup powdered milk; 5-6 cups all purpose flour; 1 stick unsalted butter (softened); 1/4 cup sugar; 2 tbsp ground cinnamon; 2 tbsp ground cardamom; 1 large egg; 1 tbsp milk; sugar (for sprinkling)