Fresh Basil and Tomato Sauce

This recipe comes straight from my grandfather's collection.

1/3 cup olive oil
1 clove garlic, chopped
1 small onion, chopped
1 sprig parsley, chopped
1 28 oz. can tomatoes, chopped
3 oz tomato paste
1 big handful basil leaves
salt and pepper, to taste
red cayenne pepper (optional)

In saucepan, add olive oil, garlic, onion, parsley, salt and pepper. Saute until onion is golden and soft. Add tomatoes, paste and basil leaves. Bring to simmer. Cook about 3-4 minutes. Taste for salt and pepper. Pinch red pepper optional. Serve.