Fragrant garlic ties everything together in this rustic pasta dish that calls for shredded meat leftovers--shredded chicken or pulled pork would be equally delicious.
Bring a large pot of salted water to a boil. Add pasta and cook according to package instructions until al dente; drain, reserving 1/4 cup pasta cooking water.
While the pasta is cooking, heat a medium pot over medium-high. Add olive oil and garlic; cook, stirring, 1 minute. Add spinach, peas, and brisket. Cover; cook 3 minutes. Stir in pasta and Parmesan; add reserved pasta cooking water to loosen, if needed. Season with salt and pepper. Top with lemon zest before serving.