Mushroom and Swiss Chicken

4 skinless, boneless chicken breasts
2 cloves crushed garlic

3 tablespoons olive oil

3 tablespoons red wine vinegar

1 tablespoon Cajun-style seasoning
1 cup chopped green onion

1 (8 ounce) package sliced fresh mushrooms

4 slices Swiss cheese

Preheat oven to 350 degrees F (175 degrees C). Combine oil and garlic in a 9x13 inch baking dish. Add chicken breasts and coat well with the oil and garlic. Sprinkle with the vinegar and Cajun seasoning. Bake at 350 degrees F (175 degrees C) for 30 minutes. Remove chicken from oven and cover with green onion and mushrooms; then add a few more sprinkles of oil and vinegar and return dish to oven for 15 to 20 minutes more. Remove from oven and immediately place 1 slice of cheese on top of each chicken breast; cheese will melt. Serve immediately.