Steel - cut are much better simmered slowly, although if you are short on time, soaking them in water overnight then draining them before simmering will drastically cut down the cooking time. (bonappetit.com)
My husband says it is only good simmered with bacon or deep fried. (rookiemoms.com)
Bring them to a good simmer and cook just long enough for the apple to soften and the liquid to form a slight syrup. (eggplantandolive.com)