4 large potatoes, peeled and chunked

2 medium onions, chopped

2 large tomatoes, chopped

About 1/2 pound Irish cheddar cheese, cut into 8 - 10 slices

Preheat oven to 350 degrees.  Butter a casserole dish.

Boil potatoes until tender in a large pot.  Meanwhile, in a medium saucepan, saute onions until soft.  Add tomatoes and cook until almost all liquid has cooked off.

Drain potatoes, return to pot and season with salt and pepper.  Assemble casserole:  Arrange half the potatoes in the bottom of the casserole dish.  Spread half the tomato/onion mixture on top.  Place 4 - 5 slices of Irish cheddar over tomatoes.  Repeat.  Bake 40 minutes, uncovered, or until top is golden brown (I like to broil it for a couple minutes for a nice crust).  Serves 4.  Goes well with corned beef.