Prepare the mashed potatoes.

Finely chop the onion and fry together with the bacon bits in a pan without oil or butter until slightly crispy.

Heat the red cabbage.

Mix this into the mashed potatoes. Peel the apple and cut into pieces.

Fold the apple pieces into the mash along with some roughly chopped walnuts, the fried bacon bits, and the onion.

Garnish the mash with some extra walnuts if desired.