melted * 1 tsp vanilla extract * 500 g all-purpose flour / 4 cups * 1 tsp salt * Purple + blue gel food coloring Cinnamon filling: 🤎🍂 * 80 g soft butter / ⅓ cup * 120 g brown sugar / ½ cup + 2 tbsp * 2 tbsp cinnamon Frosting: 🧁 * 120 g cream cheese / ½ cup * 60 g unsalted