1/2cupbrie, rind removed and cut into small pieces
1Tbsp.fresh sage, chopped
1pinchsalt and freshly ground black pepper, to taste
Place sweet potatoes in a large pot with boiling water. Boil 30 minutes, or until a fork can be pierced easily in the center of the largest potato. Move potatoes to a large bowl.
While the potatoes are cooking, prepare the caramelized onions. Heat the olive oil in a large skillet over medium-high heat. Add the onions and cook 15 to 20 minutes, stirring often, until they are browned and caramelized.
Mash the hot potatoes with a potato masher until there are no visible lumps. Add the butter and brie and stir until melted and incorporated. Stir in 1/4 cup milk, adding more if needed for desired texture. Then mix in caramelized onions and sage. Season to taste with salt and pepper.