Combine 1/3 cup of warm whole milk, 1 packet of active dry yeast and a pinch of brown sugar in the bowl of your stand mixer or a large mixing bowl, if kneading by hand
Let the yeast sit undisturbed for 5-7 minutes or until the surface is foamy
Once the yeast has bloomed, add 1 cup of pumpkin puree, 2/3 cup of brown sugar, 1 teaspoon of salt and 4 large eggs and combine using the dough hook attachment
While kneading at medium speed, begin adding flour, 1/2 cup at a time, until 4 1/2 cups of flour have been incorporated
Add 4 tablespoons of softened butter and continue kneading until fully incorporated
Continue kneading for several minutes until the dough is elastic and only slightly sticky. Add additional flour if the dough is too sticky
Cover the bowl with plastic wrap and rest the dough in a warm place for 60 minutes or until the dough has doubled in size
Transfer the rested dough onto a floured surface and roll it out into a large rectangle (approximately 12 inches by 18 inches)
Thinly slice 12 tablespoons of cold butter and layer it onto one half of the rectangle of dough
Fold the opposite half of the dough over covering the layer of butter
Re-roll the dough out into a large rectangle
Fold the dough in thirds by bringing one of the short ends into the center and then fold the opposite over this, folding as you would a piece of letter paper
Wrap the folded dough in plastic wrap and chill in the freezer for 20 minutes
Prepare two 9"x5" bread pans by greasing them with softened butter
Combine 3 tablespoons of melted butter with 1/4 cup of brown sugar and 1 tablespoon of pumpkin spice and set it aside
Once the dough has chilled, roll it out into a large rectangle and spread the melted butter and pumpkin spice mixture evenly over the surface
Roll the dough tightly, starting with the long side of the rectangle, as you would a cinnamon roll
Cut the roll in half and transfer one half of the dough into each of the prepared bread pans
Cover the dough with a clean kitchen towelÂ
Rest the dough in a warm place for 60 minutes
Preheat your oven to 350 degrees
Whisk one egg in a small bowl
Once the dough is rested, brush the top of each loaf with the whisked egg
Bake the loaves on the center rack in a 350 degree oven for 40-50 minutes or until the loaves have an internal temperature of 200 degrees
Transfer the loaves directly onto a cooling rack and allow them to cool for 30 minutes before slicing
Store loaves in an airtight container at room temperature