When broccoli rabe shows up in my supermarket, I know spring is not far behind in my area.
Sausage, Mozzarella, and Broccoli Rabe Pasta
2 tablespoons extra-virgin olive oil
Half of a large sweet onion, chopped
Coarse salt and ground pepper
2 garlic cloves, minced
8 oz spicy Italian sausage, casings removed
1 tablespoon tomato paste
1 container (26-28 ounces) chopped Italian tomatoes
2 teaspoons dried Italian seasoning
8 ounces short pasta
1 bunch broccoli rabe (about 1 pound), trimmed and cut into two-inch lengths
8 ounces mozzarella, cut into 1/2-inch dice
1/4 cup grated Parmesan
Preheat the oven to 400 degrees F.
In a large skillet or saucepan, heat oil over medium-high. Add onion and season with salt and pepper. Cook, stirring occasionally until the onion is golden brown, 15 minutes (reduce heat if browning too quickly).
Add garlic and sausage. Cook, breaking meat up with a wooden spoon, until browned, about 5 minutes. Add tomato paste and cook, stirring constantly, 30 seconds. Add tomatoes and Italian seasoning. Cook sauce until slightly thickened, 10 minutes.
In a large pot of boiling salted water, cook pasta 4 minutes less than package instructions and add the broccoli rabe to the pot with the pasta. Cook for the remaining time. Drain pasta and broccoli rabe and return to the pot. Stir in tomato sausage sauce.
Transfer to an oiled 3-quart baking dish Top with diced mozzarella and Parmesan. Bake until the cheese melts and the sauce is bubbling about 15 minutes. Let rest a few minutes before serving.