Farro with Sweet Potatoes and Feta Cheese

1 1/2 C farro (wheat berries)
3 large sweet potatoes or yams, peeled and diced
1/4 C feta cheese, crumbled
1 medium onion, sliced thin
1 Tbs olive oil

Start by soaking the wheat berries overnight in water. Drain and rinse well.

In medium pot, bring to the farro to a boil with 3 C water, and simmer for about an hour, adding more water if necessary, until soft. Meanwhile, heat the oil in a pan and add the onions. Cook slowly over low heat, stirring frequently, until caramelized.

Steam the sweet potatoes until just tender. Drain and set aside in a bowl. Add the farro, onions, and salt and pepper. Top with the crumbled feta cheese and serve at room temperature.