1 large clove garlic, halved
1 cup heavy cream
3 sprigs rosemary, 1 sprig finely chopped
A pinch of ground nutmeg
Salt and pepper
1 pound whole wheat penne pasta
1 head cauliflower, roasted
1/2 cup grated Pecorino Romano cheese, plus more to pass around the table
1/2 cup walnuts, toasted and chopped
Rub the inside of a small saucepan all over with the garlic. Add the cream, the two whole rosemary sprigs and the nutmeg; season with pepper and cook over medium-low heat until reduced by half, about 10 minutes. Discard the rosemary.
Bring a large pot of water to a boil, salt it, add the pasta and cook until al dente. Drain and transfer the pasta to a serving bowl. Add the rosemary cream, cauliflower and Pecorino Romano cheese; toss to coat. Season with salt and pepper and top with the walnuts and chopped rosemary. Pass more cheese around the table.