Warm the pan: Heat 1 tablespoon olive oil in a large skillet over medium heat. When the oil shimmers, add the ground turkey, breaking it up with a spoon.
Brown the turkey: Cook 5–7 minutes until no longer pink and lightly browned.
Season with a pinch of salt and pepper. Transfer turkey to a plate and set aside.
Soften aromatics: In the same skillet, add the remaining 1 tablespoon olive oil and the diced onion. Cook 3–4 minutes until softened and translucent.
Stir in the garlic and cook 30 seconds until fragrant.
Toast the tomato paste: Add the tomato paste and stir for 1 minute. This deepens the flavor and takes away raw acidity.
Build the sauce: Pour in the crushed tomatoes and chicken broth. Stir in Italian seasoning, red pepper flakes (if using), sugar (if using), 1/2 teaspoon salt, and 1/4 teaspoon pepper.
Bring to a gentle simmer.
Simmer and return turkey: Add the cooked turkey back to the pan. Stir and simmer 5–7 minutes to let the flavors meld and the sauce reduce slightly.
Make it creamy: Lower the heat to medium-low. Stir in the heavy cream and Parmesan.
Let it warm through 2–3 minutes, stirring, until the sauce is silky and lightly thickened.
Finish with basil: Turn off the heat. Stir in the chopped basil and a squeeze of lemon juice, if using. Taste and adjust salt, pepper, or red pepper flakes.
Serve: Spoon over hot pasta, rice, or your favorite base.
Garnish with extra basil and Parmesan if you’d like.