Instructions

  1. Bring a large pot of salted water to a boil over high heat.
  2. Add the pasta and cook until tender but still firm to the bite, stirring occasionally, about 8 to 10 minutes.
  3. Drain pasta reserving 1 cup of the cooking liquid.
  4. In a large, heavy skillet warm the olive oil over medium-high heat.
  5. Add the sausage and onions. Using a wooden spoon break up the sausage into bite-sized pieces as it browns.
  6. Continue cooking until the sausage is golden and the onions are tender.
  7. Add the beans and oregano cook for 2 more minutes.
  8. Add the mascarpone cheese and slowly add the pasta cooking liquid until a smooth sauce forms, scraping up any brown bits from the bottom of the pan.