Here is a recipe from Scotland for a cabbage and potato dish called Rumblethumps. The ingredients are similar to what's in Bubble and Squeak, but I think the preparation is different, plus there's the cheese.

I made rumblethumps tonight, and it was very good. I can't explain it, but you're not really aware that you're eating cooked cabbage, it just seems like a mashed potato casserole with an interesting texture. Don't get carried away with the cheese - a very light sprinkling is good enough because the potatoes have plenty of nice flavor of their own.

Rumblethumps (Potato Casserole)

Ingredients: 1 lb potatoes; 1 lb white cabbage, spring cabbage or kale; 1 medium onion, finely chopped; 3 oz butter; a little single cream; 2 oz mature cheddar cheese; chopped fresh chives; black pepper and salt to taste

Method: Slice the potatoes thickly and boil in a little salted water. Once cooked, drain and mash. Slice the cabbage and boil gently in slated water, do not over cook! Melt the butter in a heavy bottomed pan and cook the onions. Once soft through, add a little cream, season to taste and heat together. Place the mixture in an oven safe dish and cover with grated cheddar and place under a hot grill or oven to brown. Serves 4.