Cook pasta according to instructions on package.
To make the Tuna Marinara Sauce, heat a saucepan over medium heat. Add olive oil, then add onion and garlic; cook 1 minute. Add tuna, breaking and mashing tuna up; cook 2 minutes, stirring often. Add olives and tomatoes, and continue cooking for 2-3 minutes. Season with salt and pepper. Add chopped parsley.
7. Toss with cooked pasta and serve.
6 Freestyle points if served with whole grain pasta.
227 calories, 4 Freestyle points, 15 grams carbs if served with steamed cauliflower in place of pasta.