Preheat oven to 400°F or 200°C. Add butternut/pumpkin cubes to a baking sheet with a little oil. Toss to combine and roast for 30-45 minutes (or until soft).
While the butternut/pumpkin is roasting, cut all other ingredients.
Heat refined coconut or olive oil over medium to medium-high heat and cook onions and garlic until translucent.
Add kale, tomatoes, herbs, and vinegar, and stir well.
Cover and cook for about 20 minutes.
Meanwhile, make the béchamel sauce. Melt the butter over medium heat and allow the butter to brown lightly. Once the butter begins to brown, add the flour and cook, whisking constantly, for 1 minute. Whisk in the warm milk in a steady stream. Add a pinch of freshly grated nutmeg and simmer for 2 minutes, keep whisking. Remove from heat, stir in the blue cheese and 1/4 cup Parmesan. Season with salt and pepper. Let cool, stirring occasionally to prevent a skin from forming.
Puree pumpkin and set aside.