1. Bring a large pot of salted water to a boil over high heat. Add the pasta and cook until a bit shy of al dente according to the package directions. Add the broccoli rabe 3 minutes before the pasta is done. When the pasta is al dente and the broccoli rabe is vibrant in color, drain.
2. Meanwhile, in a separate large pot, heat the olive oil over medium heat. When the oil is shimmering, add the sausage and garlic, and cook, breaking up the sausage with a wooden spoon until it is cooked through and the garlic is beginning to brown, about 6 minutes.
3. Add the pasta and broccoli rabe to the sausage. Season with a generous pinch each of salt, black pepper, and pepper flakes, plus a drizzle of olive oil to help everything come together. Remove the pot from the heat and serve with plenty of Parmesan alongside for sprinkling.

Note: For a vegetarian option, chickpeas, or really any beans you like, make an amazing substitution for the sausage. Follow the recipe exactly as written, using one (15.5-ounce) can of chickpeas, drained and rinsed, plus a teaspoon of fennel seeds. Delish!