1 hour 45 minutes
18 dry lasagna noodles (from 1 package)

3 tablespoons extra virgin olive oil, plus more as needed

4 garlic cloves, finely chopped

1/8 teaspoon chili flakes, plus more for serving (optional)

1 28-ounce can or box chopped tomatoes

2 tablespoons plus 1/2 teaspoon kosher salt

1/4 cup finely chopped fresh basil

1 large bunch broccoli rabe (about 1 1/2 pounds)

1 1/4 cups quick-cooking polenta

1 8-ounce container mascarpone or fresh ricotta

4 ounces parmesan, finely grated (about 1 cup)

2 tablespoons unsalted butter

12 ounces fresh mozzarella, torn into bite-size pieces

1/2 teaspoon black pepper.