Cut the pumpkin and beetroot into pieces and mix with the honey and oil in a bowl. Season with salt, pepper, paprika powder and rosemary. Bake the vegetables in the oven at 200 ° C for about 25 minutes.
Meanwhile, cook the pasta until it is done. Cut the feta into pieces.
For the sauce, mix the crème fraîche, vegetable stock and a little feta and season well with salt and pepper.
Mix the pasta with the oven vegetables and pour into a baking dish. Pour the sauce over it. Now sprinkle with the remaining feta and the chopped hazelnuts.
Bake the casserole for about 45 minutes at 180 ° C.