Start by cooking the farro. Rinse the farro under cold water, then add it to a pot with the water or vegetable broth. Bring it to a boil, then reduce the heat to low, cover, and let it simmer for about 30 minutes, or until the farro is tender and the liquid is absorbed. While the farro is cooking, prepare the tofu and vegetables. Toss the tofu cubes, broccoli florets and garbanzo beans in a bit of olive oil, salt, and pepper. Spread them out on a baking sheet.