Cook in a large pot of boiling salted water:
Meanwhile, heat in a large skillet over medium heat:
Add and cook, stirring, until barely browned:
Increase the heat to high and add:
Cook, stirring, until the greens are wilted. Reserve ½ cup of the pasta water. Drain the pasta and toss it with the greens, adding:
and enough of the reserved pasta water to make a cohesive sauce.