Preheat oven to 425F.
Prepare two sheet trays with parchment paper.
In a large mixing bowl, coat the Russet potatoes, sweet potatoes, turnips, carrots, and rutabaga in vegetable oil.
Season the well-oiled root vegetables with kosher salt & freshly-ground black pepper, and toss to coat the vegetables evenly.
Transfer the root vegetables to the sheet trays, and spread out the pieces evenly.
Roast the vegetables at 425F for about 40 minutes, stirring every 15 minutes, and cook the root vegetables until they are completely tender.
While the root vegetables are cooking, place your bacon lardons in a saute pan with 2 Tbsp vegetable oil
Increase heat to medium, and cook the lardons until they have been cooked through.
Use a slotted spoon to remove the lardons from the saute pan, and reserve the lardons on a piece of paper towel on a plate for later.
Cook the sliced red onion in the same pan that was used to cook the bacon lardons.
*Scrape the bottom of the pan to incorporate the cooked bacon flavor with the onions as they cook. Add a spoonful or two of water if you need to deglaze the pan.
When the onions are cooked, after about 10 minutes, remove them from the heat and set them aside with the bacon while you wait for the root vegetables to finish roasting.
In the meantime, place the dried cranberries in a small bowl with 1 cup of hot water and allow them to plump in the hot water for 10 minutes.
When the cranberries have soaked in the hot water for ten minutes, drain the water from the cranberries.
Lightly toast the walnuts and pecans in a dry skillet over medium heat, moving the pan constantly to avoid burning the nuts
*If you are toasting nuts and accidentally burn them—just throw them out, start again, and act like it never happened.
When the nuts are toasted, remove them from the heat and set them aside to cool.
Lightly dress the cleaned and chopped kale in a large bowl with the extra virgin olive oil, and gently season with some kosher salt and freshly-ground black pepper.
When the roasted vegetables are cooked, carefully remove them from the oven and combine them with the kale.
Add the cooked bacon lardons and sauteed onions from earlier.
Add the toasted walnuts and pecans from earlier.
Toss the entire mixture together.
Taste, and season with kosher salt & freshly-ground black pepper, if desired.
For the Brie Cranberry sauce, warm the cranberry sauce on the stove until it is hot.
*If using chunky cranberry sauce with whole cranberries, quickly (and carefully) blend the warm cranberry sauce using an immersion blender until it has reached a smooth consistency.
Fold in the Brie cheese and honey, turn off the heat, and mix until combined.
When the sauce is ready and the root vegetables are cooked, it is time to serve.
Serve the roasted root vegetable, onion, bacon, kale, and nut mixture in large bowls or on plates, topped with some of the Brie Cranberry Sauce, and garnished with finely-sliced fresh chives.