Heat your oil and 2 tablespoons butter in a large skillet. Add your potatoes and onions and cook on medium high heat until your potatoes begin to brown a little. Turn them and reduce the heat, add a lid and turn your heat to low and cook for a few minutes just until the potatoes start to soften a little, but not done. Increase your heat and add your cabbage and smoked sausage and cook turning as all the ingredients brown a little. After a few minutes, lower the heat, cover and let the cabbage smother a little until soft. Then again, raised your heat, remove the lid, season with salt and pepper to taste and cook until the ingredients have browned a little and are fork tender. Add a pat of butter just to bring everything together. Enjoy!!