Heat 1 tablespoon ghee or butter in a pan. Remove morcillas from their casing and cook for a couple of minutes. The blood will stick to the pan, it's okay but do not let it burn.
Remove kale stems and chop leaves. Cook in the microwave for 2 minutes or in the pan, covered, until soft.
Whisk eggs and season with salt and pepper. Mix with the morcilla and kale.
Melt the other tablespoon of ghee or butter and grease the bottom of a large pyrex container. Pour the quiche mixture and bake until set, 40 - 50 minutes.
Cut in portions and serve, or keep in the fridge/freezer for later.