01 -
4 tablespoons unsalted butter.
02 -
2 yellow onions, finely chopped (3 cups).
03 -
3 fresh garlic cloves, minced.
04 -
2 cans (28 oz each) San Marzano crushed tomatoes.
05 -
2 cups fresh chicken stock.
06 -
1/4 cup fresh basil leaves, chopped.
07 -
1 tablespoon sugar.
08 -
1/2 teaspoon black pepper.
09 -
1/2 cup heavy whipping cream.
10 -
1/3 cup parmesan cheese, freshly grated.
11 -
Extra basil and parmesan for serving.