To cook pasta, add it to salted boling water(add salt when water boils). Reserve 1 cup of the liquid when straining pasta.

Transfer pasta to large bowl and add ricotta cheese.Toss to combine.

Meanwhile, in a large skillet, warm olive oil over medium high heat. Add garlc, green beans, salt and pepper. Saute for about 4 minutes. Add the reserved liquid from pasta and cook for about 4 more minutes. Add the pasta with the ricotta cheese to the pan and toss. Add tomatoes. Top with lemon zest and serve with the romano cheese.