- 2 onions, skin removed and cut only in half (not diced)
- 2 (28 ounce) cans san marzano tomatoes (from an Italian specialty store)
- 1⁄2 cup butter
Directions See How It's Made
- In a large pot, pour both cans of tomatoes and heat.
- Add the whole stick of butter.
- As the butter starts to melt, add the onions.
- Stir and bring to a boil then set the heat to low.
- Cook for 1 1/2 hours.
- Serving suggestion: Pour over linguini and top with fresh grated Parmesan cheese.