Tomato Butter Pasta

Three ingredients do most of the work here. The butter rounds off the tomatoes and the onion gives sweetness without any chopping.

Ingredients

• 800 g canned whole tomatoes
• 70 g butter
• 1 onion, peeled and halved
• 400 g spaghetti
• Salt
• Parmesan, to serve

Method

1. Put the tomatoes, butter and onion halves in a wide pan with a good pinch of salt.
2. Simmer over low heat for 30 minutes, crushing the tomatoes against the side of the pan now and then.
3. Cook the spaghetti in well-salted water until just short of done. Keep a cup of the water.
4. Lift out the onion, toss the pasta in the sauce with a splash of the water, and serve with parmesan.