Step 1

Cook pasta in a large pot of boiling salted water, stirring occasionally, until al dente; drain, reserving 2 cups pasta cooking liquid.

Step 2

Meanwhile, heat oil in a large Dutch oven or other heavy pot over medium-high. Add sausage and cook, breaking up with a wooden spoon, until browned and cooked through, 6–8 minutes. Using a slotted spoon, transfer sausage to a plate.

Step 3

Reduce heat to medium and cook garlic in same pot, stirring occasionally, until light golden around edges, about 2 minutes. Add basil sprigs and Aleppo-style pepper; cook, stirring, until basil is wilted, about 1 minute.

Step 4

Add corn and ½ cup water to pot and cook, stirring often, until corn is mostly tender, about 3 minutes. Stir in pasta and 1 cup pasta cooking liquid. Then add butter and cook, stirring, until butter is melted and sauce is smooth and creamy.

Step 5

Add 2 oz. Parmesan in several additions, stirring after each addition until sauce is smooth. Return sausage to pot and cook, adding a splash or two more of cooking liquid if needed to loosen sauce, until flavors meld, about 1 minute. Taste and season with salt and pepper.

Step 6

Divide pasta among shallow bowls; top with basil leaves and more Parmesan.