Add sausage to a wide pan. Pour in enough water to just cover, season lightly with salt and a pinch of fennel seed, and bring to a boil. Let the water cook off completely until the sausage fat renders and the pieces brown deeply.
Add a splash of white wine, scraping up all the browned bits. Reduce until nearly dry.
Add the white beans, cherry tomatoes, roasted garlic paste, and chicken stock. Bring to a gentle simmer and let it hang out while you cook the pasta.
Drop orecchiette into well-salted boiling water.
With
5 minutes left, add the broccoli rabe directly into the pasta pot.
Add pasta and broccoli rabe to the sausage-bean mixture. Cook over medium heat, stirring well to emulsify the stock and sausage fat. Add splashes of pasta water as needed to create a glossy, clingy sauce.
Kill the heat. Add grated Pecorino Romano, a small splash of balsamic vinegar, and adjust salt and pepper.
Extra cheese at the table. No apologies.