Warm a 4-quart saucepan or wok over medium heat. Add oil and minced garlic. When the garlic gets aromatic, add the green beans and stir.
Cook the green beans for 5-8 minutes or until they've reached your desired doneness. One minute before taking the green beans off the stove, stir in the salad dressing. Keep stirring until the beans are thoroughly coated.
Remove green beans from the stove and season to taste with salt and pepper.