Step 1: Prepare the Pasta - Bring a large pot of salted water to a rolling boil. Add spaghetti noodles and cook until al dente. Reserve half a cup of pasta water before draining.

Step 2: Sauté the Aromatics - Heat olive oil in a large skillet over medium heat. Add diced onion and sauté for about five minutes until translucent. Stir in minced garlic and cook for another minute.

Step 3: Brown the Ground Turkey - Increase heat and add ground turkey. Break into small crumbles, season with salt and pepper, and cook until no pink remains.

Step 4: Build the Sauce - Push meat to the sides, add tomato paste to the center, cook for a minute, then stir in crushed tomatoes, oregano, basil, and red pepper flakes. Simmer gently.

Step 5: Simmer and Marry the Flavors - Lower heat and let sauce simmer for 15-20 minutes, adding reserved pasta water if too thick.

Step 6: Toss and Serve - Add cooked spaghetti to the sauce, toss until coated, sprinkle with fresh parsley, and serve hot.