Homemade Cavatelli With Roasted Grape Tomatoes and Arugula

Preheat the oven to 450 degrees (preferably set on convection roast).

Toss the cherry tomatoes with the olive oil, garlic, parsley, salt, pepper, and chilli on an 11-inch x 17-inch baking sheet.

Roast in the preheated oven 30 minutes, or until soft. 

Place the semolina on the counter and mix in the salt. Make a well in the center and add enough hot water to make a dough that comes together; it will take about 1 cup of water.

The dough should be firm and form a solid mass. Add more water if the dough is ragged and does not come together (keep in mind that this dough should be quite firm, almost hard, so as to pass through the rollers of the cavatelli machine without sticking together).

Knead vigorously 5 to 10 minutes, or until very smooth. The dough should be quite hard. 

Cut into 16 pieces and roll each piece into a ¼-inch-wide log. Roll one log at a time through a cavatelli machine; be sure to keep the other logs from drying out by covering them with plastic wrap. If the dough sticks as you roll it out with the machine, dust the logs and the pasta rollers with all-purpose flour.

Toss the cavatelli in a sieve with semolina flour as soon as they are shaped to prevent them from sticking, then spread out on a semolina-dusted tray for up to 24 hours. 

Bring 6 quarts of water to a boil. Add the cavatelli and the 2 tablespoons of salt; cook until the cavatelli are al dente, about 6 minutes, tasting often to determine doneness. Drain; reserve ½ cup of the pasta cooking water.