Heat a large skillet over medium heat. (I used a cast iron skillet.) Add the olive oil and green beans. Cook and stir for one minute. This helps to blister the green beans. Cover and cook for another 4 minutes.

Uncover the green beans and stir. Reduce the heat to medium. Add the red onion, garlic and sea salt and black pepper to taste. Cook and stir for a few more minutes. Then add a splash of water or vegetable broth. Cover and cook for another 5 to 10 minutes, until the green beans are nice and tender but still bright green.

Serve hot.