In a large pot, cover the potato cubes with salted water and boil until they’re just tender but still hold together.

Drain, put the potatoes back into the pot and set aside.

Melt the butter over medium heat in a frying pan.

Fry the onions in the butter until golden.

Pour the butter and onions over the potatoes and mix well (you’re not making mashed potatoes, though, so the mixture should be a combination of chunks and mashed bits all mixed up together).

Season with salt and pepper, to taste.