01 -
4 tablespoons unsalted butter.
02 -
2 yellow onions (3 cups chopped).
03 -
3 cloves garlic, minced.
04 -
56 ounces crushed San Marzano tomatoes.
05 -
2 cups chicken stock.
06 -
1/4 cup fresh basil, chopped.
07 -
1 tablespoon sugar.
08 -
1/2 teaspoon black pepper.
09 -
1/2 cup heavy whipping cream.
10 -
1/3 cup freshly grated parmesan.
11 -
Extra basil and parmesan for serving.