Clean, wash and cut the green beans into pieces. Cook in boiling salted water for about 15 minutes and drain. In the meantime rinse and drain the beans. Wash basil, dab dry and pluck leaves from the stalks. Peel garlic and press it through a garlic press. Sauté in hot olive oil.
Add beans and basil. Deglaze with tomato soup, bring to the boil briefly. Season to taste with salt and pepper. Divide into 4 soup plates and serve with 1 teaspoon of pesto each. Add roasted pine nuts to taste