Cut your cabbage into quite thin slices. Grate your apple and cut the onion also into thin slices.
Melt the butter on your pan or casserole. Even a dutch oven is great to use.
Add in all your ingredients, give it a stir and let simmer with a lid on for 50-60 minutes on medium heat. Stir it once in a while.
Notes
Additional spices you can add; ⅛ teaspoon nutmeg, ¼ teaspoon cumin. Danish love to add currant jam to their cabbage. If you like to try, then add 2 tablespoon of it to the recipe. Stores for 5 days in the fridge.