In a small bowl, add the raisins and dried cranberries. Add 1 tablespoon of vanilla and cover the raisins and cranberries with warm water. Let that sit while you make the buns.
Combine the milk, yeast, and 1 tablespoon of sugar in the bowl of a stand mixer fitted with a dough hook. Let that sit for five minutes.
After the five minutes is up, add the rest of the sugar, eggs, and melted butter to the stand mixer. Mix to combine.
Add the flour, salt, pumpkin pie spice, and cinnamon. Turn the mixer on low and slowly combine.
Drain the raisins and cranberries with a strainer and discard the liquid. Add the now plumped cranberries and raisins to the dough.
Turn the stand mixer on medium and knead the dough for five minutes.
After the dough has been kneaded, cover with plastic wrap and let that rise at room temperature for 1.5-2 hours. The dough will be doubled in size when it is done.
Once the dough has doubled in size, punch it down to let some air out and lightly flour your counter. Empty the dough onto the counter and spread it into a square. Cut the dough into 12 pieces.
Grease a 9x13 inch pan with butter all over so the buns do not stick.
Shape the 12 pieces of dough into 12 individual dough balls. You can do this by folding the balls over and into themselves. Place the dough balls in the 9x13 inch pan. They should barely be touching. Do not overcrowd them.
Cover with plastic wrap and let it sit at room temperature for another hour. The balls will rise and start touching each other and that is what you are looking for.
In the meantime, preheat the oven to 375°.