Trim and rinse green beans. Put into pot with 1 gallon boiling water. Cook for 5-7 minutes to tender crisp.
Meanwhile cook bacon to desired crispness. Drain and set aside.
In 10-12 inch skillet mix together salad dressing and tomatoes. Heat to boil. Reduce heat to medium low. Add beans toss into tomato mixture. Cook for 2-3 minutes. Place into serving dish. Sprinkle in onions and bacon. Sprinkle cheese over top. Serve!