Pasta with Tomato Cream Sauce

2 Tbsp olive oil
2 Tbsp butter
1 whole medium onion, finely diced
4 cloves garlic, minced
2 cans (15 oz each) tomato sauce
salt & pepper, to taste
Dash of sugar (more to taste)
1 cup heavy cream
Grated Parmesan or Romano cheese, to taste
Fresh basil, chopped
1-1/2 lbs fettuccine

Cook pasta according to package directions. Drain, reserving 1 cup of pasta water.

Head butter and oil over medium heat. Add onions and garlic and saute for a minute or so. Pour in tomato sauce and add salt, pepper, and sugar to taste. Stir and cook over low heat for 25 to 30 minutes, stirring occasionally.

Remove from heat and stir in cream. Add cheese to taste, then check seasonings. Stir in pasta and chopped basil and serve immediately. (Thin with pasta water before adding basil if needed.)