Prep the vegetables first so everything moves quickly at the stove: peel (if you like) the sweet potato and cut into 1/2-inch (12 mm) dice so pieces cook evenly and develop a good crust. Dice the red pepper into similar-sized pieces, finely chop the onion, and mince the garlic. Stack and roll the basil leaves and slice into thin ribbons (chiffonade).

Par-cook the sweet potato: bring a small pot of salted water to a simmer and add the diced sweet potato for 4 minutes, then drain and pat dry. Why: a short simmer speeds through the starchy center so you can get a crisp, golden exterior without burning the outside or overcooking the sausage.

Heat a 10-inch (25 cm) heavy skillet (cast-iron preferred) over medium-high heat until shimmering. Add the olive oil and swirl to coat. Why: a hot, well-oiled pan is essential to create Maillard browning on the sweet potato and sausage for deep flavor.

Add the par-cooked sweet potato in a single layer, seasoning with half the salt and a pinch of black pepper. Let cook untouched for 3–4 minutes to form a golden crust, then stir and continue to brown another 3–4 minutes until deeply caramelized in places. Why: not stirring lets a crust form; that crust provides toasty flavor and prevents the pieces from becoming mushy.

Push the sweet potato to one side of the skillet and add the ground turkey sausage to the empty space. Break it up with a spatula and let it sear without crowding for 2–3 minutes so it can brown. Why: searing the sausage concentrates the fats and flavor. Browning releases fond that will flavor the whole hash.

When the sausage is about 80% cooked and starting to brown, stir in the diced red pepper and chopped onion and a remaining 1/4 tsp salt. Sauté 3–4 minutes until the pepper softens and the onion becomes translucent. Add the minced garlic and cook 30 seconds until fragrant — don’t overcook, or garlic turns bitter. Why: adding vegetables after the meat has started browning preserves their texture and prevents steaming.

Combine the sausage-vegetable mixture with the sweet potatoes, scraping up any browned bits from the pan. Taste and adjust seasoning with the remaining salt and the rest of the black pepper. Why: the fond (browned bits) contains concentrated flavor — deglazing and incorporating it builds depth.

Reduce heat to medium-low and stir in the baby spinach in batches until wilted — about 1–2 minutes. Finish with the fresh basil, a quick toss, and remove from heat. Why: gentle heat preserves the spinach’s bright color and fresh basil aroma while letting residual heat meld flavors.

Plate immediately so the sweet potato stays crisp. Optional: finish with a drizzle of extra-virgin olive oil or a grating of Pecorino Romano or Parmesan for a salty, savory lift. Why: plating hot maintains texture contrasts and a finishing cheese or oil adds gloss and an extra layer of flavor.

Serve: divide into two portions. This hash is great on its own, topped with a fried egg, or served alongside crusty bread. Why: the egg yolk adds silkiness that contrasts wonderfully with the caramelized sweet potato and herbed sausage.