Slice potatoes and place in the bottom of the slow cooker.
Add the onions on top of the potatoes.
Spread the pork-n-beans over the potatoes and onions.
Layer the cooked and drained hamburger next.
Sprinkle the dish with salt and pepper to taste.
Mix the tomato soup, water and steak sauce together. Spread it over the top of the hamburger.
Cook on low 8-10 hours or until the potatoes are cooked.