Pasta Fra Diavolo

I discovered this recipe in my Weight Watchers Cookbook several years ago.  We always make this in place of spaghetti.

Pasta Fra Diavolo

2 tsp. Olive oil
1 small onion, chopped
3 garlic cloves, minced
1 (28 oz.) can diced tomatoes
3 Tbsp. Tomato paste
2 Tbsp. Dry red wine (or sherry)
1/2 tsp. sugar
1/4 tsp. salt
1/4-1/2 tsp. crushed red pepper flakes
1/4 c. Fresh parsley, finely chopped
4 oz linguine

In a large saucepan over medium heat, cook onion and garlic in olive oil until golden, about 8 min. Add tomatoes, tomato paste, wine, sugar, salt and pepper flakes. Bring to a boil. Reduce heat and simmer, uncovered, until the sauce is slightly thickened, about 20 mins. Stir in parsley. Meanwhile, cook pasta according to package direction. Drain and serve with sauce.