Romanesco Broccoli And Rigatoni - cooking recipe

Ingredients

salt and black pepper
1 lb rigatoni pasta
3 tablespoons butter
1 large onion, chopped
2 large garlic cloves, finely chopped
1/2 cup dry white wine
1 cup chicken stock or 1 cup vegetable stock
1 head romanesco broccoli or 1 head Broccolini, cut into florets
1 teaspoon lemon peel, grated
2 sprigs rosemary, finely chopped
1/2 teaspoon crushed red pepper flakes
2/3 cup pecorino romano cheese, grated, plus more to pass around the table (a couple of generous handfuls)
1/2 cup walnuts, chopped, toasted

Preparation

Bring a large pot of water to a boil, salt it, add the pasta and cook until al dente. Drain, reserving a couple of ladlefuls of the pasta cooking water.
While the pasta is working, in a large, heavy saucepan or Dutch oven, melt the butter over medium-high heat. Add the onion and garlic and cook until golden, 6 to 7 minutes. Stir in the wine for 1 minute, then the chicken stock. Add the broccoli, lemon peel, rosemary and crushed red pepper; season with salt and black pepper. Cover and cook for 10 minutes.
In a serving bowl, toss the pasta, reserved pasta cooking water, cooked vegetables, cheese and nuts for a minute. Season with salt and black pepper and serve, passing extra cheese at the table.