Long Fusilli with Potatoes and Haricots Verts in Lemon Sauce

Prepare an ice-water bath. Cook potatoes in a large pot of boiling water until tender, about 15 minutes. Transfer potatoes to a bowl using a slotted spoon; pat dry. Add haricots verts to boiling water. Cook until tender, about 5 minutes. Drain, and transfer to ice-water bath. Drain.

Heat oil in a large skillet over medium heat. Cook garlic until golden, about 3 minutes. Add potatoes and haricots verts; toss to coat. Add reserved cooking water, the cheese, and the lemon zest and juice. Simmer until cheese melts. Toss in pasta, basil, and red-pepper flakes.