Bring your mise en place together: measure the leftover bolognese into a microwave-safe bowl, spiralize the zucchini (or use store-bought zoodles) and finely mince the shallot and garlic. Having everything ready prevents overcooking the delicate zucchini and speeds reheating so the sauce stays vibrant.

Warm the bolognese gently: transfer the leftover turkey bolognese to a medium saucepan and heat over low–medium heat until it just simmers, stirring occasionally, about 6–8 minutes. If it’s dry, add 1–2 tbsp water or broth. Why: low, steady heat prevents the tomato sugars from burning and keeps the turkey tender; adding a splash of liquid revives the sauce without diluting flavor.

Flavor lift: while the sauce warms, heat a large nonstick or stainless skillet over medium heat and add 1 tbsp olive oil. Add the minced shallot and sauté 1–2 minutes until softened and translucent — this builds a sweet, aromatic base. Add the minced garlic and sauté 20–30 seconds until fragrant. Why: cooking aromatics briefly blooms their flavor — too long and garlic will burn and become bitter.

Toss the zoodles: increase heat to medium-high and add the zoodles to the skillet with the shallot-garlic oil. Season lightly with 1/2 tsp kosher salt and a few grinds of black pepper. Sauté, turning constantly, for 1–2 minutes until just warmed and slightly tender but still with a little bite (al dente). Why: zucchini contains a lot of water — quick high heat preserves texture while evaporating excess moisture so the zoodles don’t become soggy.

Finish the zoodles: sprinkle the dried oregano and red pepper flakes over the zoodles and toss for 10–15 seconds to bloom the dried herb in heat. Add the optional 1 tbsp butter and 1 tbsp olive oil, toss until the butter melts to coat the zoodles and give a glossy finish. Why: the fat carries flavor, gives mouthfeel and helps the sauce cling to the zoodles.

Build the plate: taste the warmed bolognese and adjust seasoning (salt, pepper) as needed. Mound the zoodles onto warm plates or a shallow serving bowl, spoon a generous ladle (about 3/4 cup) of the hot turkey bolognese over each portion of zoodles so you get sauce in every bite. Why: serving the sauce on top instead of stirring too early prevents the zoodles from over-softening in the sauce and maintains contrast in texture.

Finish and serve: drizzle each portion with the remaining 1 tbsp olive oil, sprinkle 1 tablespoon grated Parmesan per serving, and scatter torn basil leaves on top. Serve immediately. Why: finishing oil brightens the flavors and adds perfume; fresh herb and cheese layers add temperature contrast and umami that make the dish feel restaurant-quality.

Storing note: any leftover zoodles will release water and become soft when refrigerated; store sauce and zoodles separately and reheat quickly the next day to preserve texture. Why: zucchini’s high water content changes texture after chilling, and separate storage preserves both components.