SERVES 4
2   tablespoons extra-virgin    olive   oil
2   tablespoons unsalted    butter
1   medium  onion,  finely  diced   (about  1½  cups)
2   medium  cloves  garlic, minced  or  grated  on  a
Microplane  (about  2   teaspoons)
½   teaspoon    dried   oregano
Pinch   of  red pepper  flakes
One 28-ounce    can whole   tomatoes    packed  in  juice,
crushed by  hand    or  with    a   potato  masher  into    rough   ½-
inch    chunks
1   stem    fresh   basil   (optional)
½   cup heavy   cream
¼   cup vodka
Kosher  salt
1   pound   penne,  ziti,   or  other   short   tubular pasta
1   pound   boneless,   skinless    chicken breasts,    cut into    ½-
inch-wide   slivers
2   tablespoons chopped fresh   parsley
Grated  Parmigiano-Reggiano for serving
- Heat    the     olive   oil     and     butter  in  a   large   saucepan    over
 medium-high heat until the butter has melted and the
 foaming subsides. Add the onion and cook, stirring
 frequently, until softened but not browned, about 3
 minutes. Add the garlic, oregano, and pepper flakes and
 cook, stirring, until fragrant, about 1 minute. Add the
 tomatoes, with their juice, and basil, if using. Bring to a
 boil over high heat, reduce to a simmer, and cook,
