Chocolate Cinnamon Rolls

Name: Chocolate Cinnamon Rolls
Prep time: 30 min
Cook time: 30 min
Total time: 1 h
Cuisine: American
Ingredients: 1 cup milk (warmed to 105-110°F); 2 1/4 teaspoons active dry yeast ((1 packet)); 1/4 cup granulated sugar; 2 large eggs (beaten); 6 tablespoons unsalted butter (softened); 1 teaspoon fine sea salt; 1/2 cup unsweetened cocoa powder; 3 cups all-purpose flour (plus more as needed); 4 tablespoons unsalted butter (softened); 1/3 cup brown sugar; 1 tablespoon ground cinnamon; 1/2 cup mini chocolate chips; 2 cups powdered sugar (sifted); 2 tablespoons unsalted butter (softened); 2-3 tablespoons milk; 1 teaspoon pure vanilla extract