In a large deep saucepan on a medium heat, bring the olive oil to heat and fry the onions and garlic for 5 minutes or until fragrant and translucent. Stir occasionally to avoid the garlic from burning. Add the oregano and chilli flakes and fry for an additional 2 minutes.
Turn the heat to high. Fry the tomato paste for 2 - 3 minutes or until it has caramalised, turned a deep red colour and is almost sticking to the pan. Turn the heat to medium and add the vodka. Cook until 80% of the liquid has been absorbed. Add in the cream and cook for 1 minute on a medium heat or until the cream has foamed and is bubbling. Turn the heat to low and stir the cream through the sauce with a pinch of salt until all ingredients are well combined.
Stir through the beans and cheese until well incorporated. Serve immediately.