Preheat the oven to 375 degrees.
Heat the oil and saute onions and garlic over medium heat until onions are translucent (about 5 minutes).
Add the red pepper flakes and dried oregano and cook for a minute or so more.
Add the vodka or cooking wine and simmer for 5-7 minutes to let the flavors seep in.
Using clean hands, crush each tomato from the can into the pan. (Extra fun for kids to crush food with their bare hands :)
Add 2 tsp. of salt and 1/2 tsp. black pepper
Bake this mixture in the oven to let the flavors deepen. You're supposed to do this in an oven-proof pot (see below, as well as my initial substitute).
Bake at 375 degrees for an hour and a half. That's an awful lot of time that sometimes I have, and sometimes I don't. But do your best and it still works out fine!
While it is cooking, cook the pasta according to package directions and set aside.
Once the pasta is cooked, blend that cooked tomato mixture in the blender. Or use an immersion blender (see notes below).
Add the blended mixture back to the pot.
Add the heavy cream, fresh oregano, 1 tsp. salt and 1/2 tsp. pepper and simmer for a few minutes.
Then you're ready to serve it up! The recipe calls to pour the sauce over the pasta, add parmesan cheese and a little more fresh oregano to garnish if you have them.