In saucepan melt butter; blend in flour. Stir in undrained stewed tomatoes, tomato sauce, red wine, onion soup mix, oregano, salt and pepper. Cook and stir until thickened and bubbly. Stir in cubed beef and cooked macaroni.

Spoon mixture into a 1 1/2 quart casserole. Bake, uncovered, at 350 degrees for 20 minutes. Sprinkle with cheese; top with green pepper rings. Return to oven until cheese melts, about 5 minutes more. Makes 4 or 5 servings.