Chai Spiced Cinnamon Rolls

Name: Chai Spiced Cinnamon Rolls
Prep time: 2 h 30 min
Cook time: 20 min
Total time: 2 h 50 min
Cuisine: Asian, American
Ingredients: ¾ cup buttermilk; 1 packet active dry yeast (¼ oz); ½ cup granulated sugar; 6 tbsp unsalted butter (room temperature); 1 egg (room temperature); ¼ tsp salt; 2 ¾ cup all purpose flour; 2 tbsp unsalted butter (room temperature); 1 tsp ground cinnamon; 1 tsp ground cardamom; 1 tsp ground ginger; 1 tsp ground star anise; 1 tbsp earl grey tea (ground); ¼ cup light brown sugar; 2 tbsp coconut milk; 1 tbsp maple syrup; ¾ cup powdered sugar; ½ tsp vanilla extract