Cinnamon Roll Baked Oatmeal

Bahan-bahan (6 porsi)

• 2 tablespoons unsalted butter
• 2½ cups old fashioned or quick-cooking oats
• 1 tablespoon ground cinnamon
• 1 teaspoon baking powder
• ¼ teaspoon kosher salt
• 2 cups nonfat milk, (at room temperature)
• 1 large egg, (at room temperature)
• ½ cup unsweetened applesauce, (at room temperature)
• ⅓ cup maple syrup
• 1 teaspoon vanilla extract
• ½ cup finely chopped pecans or walnuts
• 2 tablespoons turbinado (coarse) sugar, (optional)
• 2 tablespoons unsalted butter
• ½ cup powdered sugar
• 2 teaspoons nonfat milk
• 1 teaspoon vanilla extract