Press Saute in an Instant Pot and add Milk and Butter in the pot. When the butter starts to melt, switch off the Instant Pot in around 5 minutes.(Note: Take the inner pot out of the Instant Pot when the milk is warm in order to avoid the milk getting hot.) Wait for few minutes for the milk to cool down and is warm. Once the milk cools down and is warm, add Honey/ Maple Syrup and mix lightly. Then add the Yeast and let it sit for 5 minutes (or as per instructions). Wait for 5 minutes until the mixture gets foamy & bubbly.(Note: Butter and Milk mixture should not be too hot otherwise, Yeast will not work). After 5 minutes when the mixture gets foamy, add the rest of the ingredients (including flour, pumpkin puree, pumpkin spice-mix, baking soda, baking powder, brown sugar, and salt). Knead everything until a sticky dough is formed, you can also add more dough if needed.
Close the lid and press the Yogurt button and set a timer for 1 hour. Once the timer beeps after 1 hour, the dough should have doubled in size.Or you can leave the dough for 2-3 hours at a warm place like in a microwave, or in the oven with lights on. Just make sure the oven should not be hot. Grease a baking tray with oil or butter. Or you can also line up the parchment paper to make cleaning a little less messy. Coat your hands with Oil/Butter so that dough will not stick in your hands.
Now take a small amount of dough, around 1 inch in diameter, and flatten it in your hands. Now stretch all the sides and wrap them together at the center like you're wrapping a gift. Place the ball seam side down in the pan. Repeat the process for the rest of the dough.
Now make the dough shape like a pumpkin. You can make 6 cuts on the sides or you can use thread to shape the dough. Take a thread and put the dough on top of it and tie a knot by bringing the thread on the top. Take another thread and tie a knot by bringing the threads from other sides. Keep tieing the threads until the dough looks like a pumpkin. Repeat the process for the rest of the dough.
Poke the finger at the center of the dough to make a little indentation on the dough pumpkin's top. Repeat the process with all dough pumpkins.
Preheat the oven at 350° for 10-15 minutes. Place the pumpkin rolls on the baking tray and cover the pan with a kitchen towel and let it rest for 30 minutes
Check the buns after 30 minutes. If they are risen and are doubled in size then brush milk over the roll and bake for 15-20 minutes until a little golden in color.
Once baked, brush the rolls with melted butter to make them shine. Insert pecan pieces at the center on the top to mimic the pumpkin stem.