This dish tastes just like your favorite summer salad, only heartier. If you haven't tried a one-pot pasta yet, do: It's a great timesaving trick. Place all the ingredients in the pot together, add enough water and simmer. The noodles and sauce cook together, which means this dinner is ready in just 15 minutes. Stirring in the fresh mozzarella after the pasta has finished cooking creates an almost instant cream sauce, coating each noodle with a hint of cheese.
Place the tomatoes, spaghetti, water, garlic, red pepper flakes, oregano and oil in a stockpot and bring to a boil. Reduce heat and simmer for 10 to 12 minutes, until the pasta is al dente, stirring occasionally.
Once the pasta is cooked, remove the pot from heat and stir in the basil, mozzarella and salt and pepper to taste. Serve with Parmesan if using.