Drain pineapple pieces. Cut luncheon into little pieces. Cut tomato into little pieces. Now put buns in oven and grill outsides to your liking.
Take out and turn up the other way. On each bun half swirl some tomato sauce. Put luncheon sausage, pineapple and tomato on now. Next put grated cheese on. Then sprinkle oregano over the top.
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