An unusual, but delicious, combination of red cabbage, apple and yogurt.
Preheat oven to 300ºF.
In a large casserole dish combine the onions, fennel, red cabbage and apple. Combine the yogurt and horseradish sauce in a small bowl. Stir through casserole; season with salt and pepper.
Cover and bake in preheated oven for 1 1/2 hours, stirring occasionally.
Serve as a side dish or serve hot with crusty rolls.
Serving suggestion is not included in the nutritional analysis.