Wash the pumpkin, cut in half and remove seeds. Wash and peel potatoes and beetroot. Cut everything into slices. Cut apples into quarters, remove seeds. Wash marjoram and shake dry.
Mix potatoes and beetroot with 3 tablespoons of oil, salt and pepper. Place on a baking tray. Cook in a hot oven (200 °C/circulating air: 175 °C) for about 40 minutes. Mix pumpkin and apples with 2 tbsp. oil, salt and pepper. Add pumpkin seeds and marjoram after about 20 minutes and continue cooking. Turn vegetables in between
Wash the chives, shake dry and cut into fine rolls. Stir together sour cream, horseradish, honey and chives, except for a little for garnishing. Season with salt and pepper and sprinkle with chives
Remove vegetables from the oven. Add sour cream