Special equipment: a 12-cup Bundt pan
For the bread: Preheat the oven to 350 degrees F.
Melt the butter in a saucepan. Whisk in the pumpkin puree, brown sugar and salt until smooth. Remove from the heat.
Mix together the granulated sugar and pumpkin pie spice in a large bowl. Add the biscuit dough balls and toss in the sugar-spice mixture to coat.
Spread a third of the pumpkin butter into the bottom of a 12-cup Bundt pan. Arrange half of the biscuit pieces on top, then layer in another third of the pumpkin butter. Top with the remaining biscuit pieces, then the remaining pumpkin butter. Bake until browned on top, 35 to 45 minutes. Allow to cool on a rack for 15 minutes.
For the glaze: Meanwhile, combine the confectioners' sugar, zest, juice and pumpkin pie spice in a bowl and whisk until smooth and pourable. Invert the monkey bread onto a plate and drizzle with the glaze.