Add the bavette to plenty of salted boiling water and cooking according to the instructions on the pack.
In a large frying pan cook the garlic and shallot in a little oil. Once golden, add the prawns, a little salt and pepper and gently cook for a few minutes. Remove from heat and set aside.
Four or five minutes before draining the pasta, add the potatoes and green beans to the pasta and its water
Drain the pasta, potatoes and beans, reserving a little of the pasta water and add to frying pan to finish cooking.
Once the prawns are cooked and excess liquid has been absorbed, remove from the heat and add the Pesto Genovese. Mix well to coat pasta evenly.
Serve immediately with a drizzle of Extra Virgin Olive oil.