Cook the spaghetti in salted water according to the instructions on the packet. Then drain. Meanwhile, peel the onions and cut into small cubes. Peel and press the garlic. Finely chop the chilli.
Bring some salted water to the boil in a small saucepan and blanch the green beans in it for 5 minutes. Then drain. Heat some olive oil in a pan. Add the garlic, chilli and onions and sauté for 2-3 minutes over medium-high heat. Add the prawns and fry for another 4-5 minutes. If you are using frozen shrimp, this process will take a few minutes longer. Now add the pasta. Fry on high heat for 4-5 minutes. Add a little butter to the pan.
In the last step, add the Parmesan, green beans and the juice of a lime to the pan. Stir everything well. Season to taste with salt and pepper. Garnish with Parmesan. Good Appetite!