Prick the sausages several times with a fork. Heat a splash of extra virgin olive oil in a large frying pan over medium-high heat.
Add the sausages and brown them on all sides for 10–15 minutes, turning occasionally until golden and cooked through.
Meanwhile, peel and thinly slice the garlic cloves. Remove the sausages from the pan and set aside on a plate.
In the same pan, with the sausage fat and oil, fry the garlic over medium-low heat until lightly golden and fragrant.
Drain and rinse the beans. Increase the heat to medium-high and add them to the pan with the garlic. Cook for 5–7 minutes, stirring so they absorb the flavour. Season with salt and freshly ground black pepper to taste.
Cut the sausages into thick slices or leave them whole, as you prefer. Return them to the pan with the beans and gently mix. Cook for another 2 minutes until everything is piping hot.
Serve immediately, scattering the chopped parsley over the top just before serving.