Preheat the oven to 350°F.
While the oven is heating, carefully slice the Hawaiian rolls in half horizontally, keeping the rolls connected, so you have one large bottom layer and one large top layer.
Lightly spray a baking sheet or casserole dish with cooking spray, line with parchment paper, or use both. Place the bottom half of the Hawaiian rolls into the prepared pan.
In a small bowl, combine the brown sugar, butter, pure pumpkin, cinnamon, and pumpkin pie spice.For the regular version, make sure the butter is softened to room temperature.For the lightened-up version, the light butter is already soft and can be used as-is. Mix until everything is very well combined and you have a smooth, spreadable filling.
Spread about 80% of the pumpkin cinnamon filling evenly over the bottom half of the rolls.
Place the top half of the rolls back on, then spread the remaining filling over the tops.
Bake for 20 minutes, or until the rolls are warm, soft, and lightly golden.
While the Rolls Bake, Make the Frosting
For the regular Pumpkin Spice Hawaiian Roll Buns
In a small bowl, combine the softened cream cheese, pure pumpkin, powdered sugar, vanilla extract, cinnamon, pumpkin pie spice, and a pinch of salt if desired.Mix until smooth and creamy with a frosting-like consistency.
For the Macro Friendly Pumpkin Spice Hawaiian Roll Buns
In a small bowl, combine the Pumpkin Spice Latte protein powder, pure pumpkin, vanilla extract, cinnamon, pumpkin pie spice, and a pinch of salt if desired.Slowly add the Fairlife milk, a little at a time, mixing as you go until you reach your desired frosting or glaze consistenc
Finish the Rolls
Once the rolls are finished baking, remove them from the oven.
For the Regular Pumpkin Spice Hawaiian Roll Buns, spread the cream cheese frosting over the warm rolls.
For the Macro-Friendly Pumpkin Spice Hawaiian Roll Buns, drizzle or spread the pumpkin spice protein frosting over the warm rolls.
Serve warm and enjoy! 🎃