Step 1

In a large pot of boiling salted water, cook the pasta until al dente. Drain well.

Step 2

Meanwhile, in a large, deep skillet, heat 2 tablespoons of the olive oil until shimmering. Add the sausage and cook over moderately high heat, breaking it up with a wooden spoon, until browned, about 7 minutes. Using a slotted spoon, transfer the sausage to a plate.

Step 3

Add the garlic, crushed red pepper and the remaining 2 tablespoons of olive oil to the skillet and cook until fragrant, about 1 minute. Add the chicory with any water clinging to the leaves and season with salt. Cover and cook until wilted, about 2 minutes. Uncover and cook until the chicory is tender and the liquid has evaporated, about 5 minutes longer.

Step 4

Add the pasta to the skillet along with the sausage, chicken stock and pecorino and cook over moderate heat, stirring constantly, until the liquid is slightly reduced and creamy, about 3 minutes. Stir in the mint and serve right away, passing extra cheese at the table.