Apple Cinnamon Rolls

Makes 9 rolls. Active time 40 minutes; total time 1 hour 15 minutesFor the filling:1 1/4 cups light brown sugar5 tablespoons unsalted butter, cut into chunks, plus more for greasing the pan2 teaspoons cinnamon1 large apple ( about 8 ounces), cored, and chopped into 1/4 inch piecesFor the buns:1/2 cup buttermilk1 large egg3 cups all-purpose … Read more