Wipe out the skillet and heat the oil over medium. Add the green beans and season generously with salt and pepper. Cook, stirring frequently, until the beans are crisp tender and start to brown in spots, 6 to 8 minutes. Add a few tablespoons of water to help them along, if needed. Turn off the heat.
2 tbsp olive oil, 1 lb green beans, black pepper, ½ tsp salt