Preheat the oven to 350F.
Once the dough has doubled in size gently release the air by pressing down on the dough. Bring the dough onto a lightly floured surface and roll it out into a rectangular shape approximately 12”x18”. You can adjust the edges with your hands if necessary to get it as rectangular as possible.
Evenly spread out the soft butter over the rolled-out dough leaving a small border around the edge approximately 1” wide. (I now realize you only need the 1” border on the long sides, not the short sides, but that’s what I did – you get less cinnamon sugar on the end rolls if you leave a 1” wide border on the short ends – not the end of the world)
Sprinkle the sticky bun filling (sugar/cinnamon/nutmeg mixture) evenly over the butter
Tightly roll up the dough starting at one of the long ends. Pinch the seam together.
Cut the 18” log into 12 even pieces using a sharp serrated knife. (I see some people use dental floss but this did not work for me). See notes for getting even slices.
Place the 12 cut rolls into the prepared pan and on top of the nuts and caramel.
Cover the pan with plastic wrap and allow the dough to rise again (about 15-30 minutes). The rolls should puff up a bit, and once they are touching each other remove the plastic wrap and place the pan in the 350F oven. Bake for 28-30 minutes. The tops should be browned a bit and an instant read thermometer placed into the middle roll should read 180F or more. If the buns are browning too fast you can tent some aluminum foil over them.
Remove the pan from the oven and let the buns cool for about 5 minutes, but not completely.
Place a suitable serving platter or baking sheet over the buns, and in one quick motion flip the pan so that the rolls are now sitting on the serving platter (the tops of the buns are now the bottoms of the buns). Let the 9x13 pan sit on top for a minute or two to allow as much of the caramel to drip down on top of the buns.
Remove the 9x13 pan.
Sticky buns are best served warm. Enjoy!