saucepan of water, boil the potatoes until fork-tender. Drain and set aside. In a stockpot, melt the butter over low heat, add the onion, and gently saute until soft and translucent (do not brown). Add the potatoes, cream, half & half, bouillon cubes, milk, salt and pepper. Simmer over low heat until thickened and thoroughly heated, about 30 mins. If you like a thicker soup, add a little cornstarch or flour, dissolved in a small amount of liquid.