Bring a large pot of water to a vigorous boil and generously salt it (about 1 tablespoon salt per 4 quarts water). Salting the water seasons the pasta from the inside out; it’s your only chance to flavor the pasta itself. Have a colander nearby.

If your turkey is already formed into 8 meatballs, pat them dry with paper towels and season the exterior lightly with salt and pepper. If they are not pre-formed, shape into eight equal meatballs (about 1.25–1.5 oz each). Dry meatball surfaces sear better and develop a flavorful crust; seasoning the outside is essential because ground turkey is lean and benefits from surface seasoning.

Heat a wide, heavy skillet (preferably stainless steel or cast-iron) over medium-high heat and add 1 tablespoon olive oil. When the oil shimmers, add the meatballs in a single layer (do not crowd — brown in batches if needed). Sear for 2–3 minutes per side until deeply browned on all sides. Searing at high heat produces Maillard browning — that brown crust creates savory flavor that you want in every meatball.

Remove the browned meatballs to a plate. Lower the heat to medium and add the minced garlic to the skillet. Cook for 20–30 seconds until fragrant — don’t let it burn. The short sauté mellows raw garlic and allows it to perfume the sauce without becoming bitter.

Pour in 1 cup marinara sauce and stir, scraping up the brown bits (fond) from the bottom of the pan — those bits are concentrated flavor. Bring the sauce to a gentle simmer, then nestle the seared meatballs back into the sauce. Cover partially and simmer gently for 12–15 minutes, turning once halfway through so they cook evenly. Ground turkey must reach an internal temperature of 165°F (74°C); simmering in sauce finishes the meatballs gently and infuses them with tomato flavor.

While the meatballs simmer, cook the pasta: add the 6 oz whole-wheat pasta to the boiling water and cook 1–2 minutes less than the package instructions for al dente (it will finish cooking in the sauce). Cooking pasta al dente provides the best texture and prevents it from becoming mushy when tossed with sauce.

Reserve 1/4 cup of the pasta cooking water before draining. The starchy pasta water is a chef’s secret for emulsifying sauces and helping them cling to the pasta.

If your roasted zucchini and cherry tomatoes are not warm, reheat them briefly in a dry skillet or in the oven at 400°F for 5 minutes to concentrate their flavor. Warm roasted vegetables integrate better into the sauce and release a bit of their juices to marry with the marinara.

When the meatballs are cooked through, remove the skillet from the heat and gently transfer the meatballs to a plate (keep sauce in pan). Add the drained pasta to the sauce along with the roasted vegetables, 1 tablespoon butter (optional, for silkiness), and a splash (2–4 tablespoons) of reserved pasta water as needed. Toss gently over low heat for 1–2 minutes until the sauce coats the pasta and glossy emulsion forms. The tossing and addition of starchy water create a silky sauce that clings to each strand.

Return the meatballs to the pan and nestle them on top of the pasta. Taste and adjust seasoning with salt, pepper, and a pinch of red pepper flakes for heat if desired. Finish with 2 tablespoons freshly grated Parmesan and torn basil leaves. Finishing with cheese off-heat prevents the cheese from clumping and preserves its nutty flavor.

Serve immediately: divide into two plates (4 meatballs each), spoon extra sauce over top, and sprinkle additional Parmesan to taste. Enjoy while hot for the best texture contrast between the crusted meatballs and al dente pasta.