Lime Rice Pilaf

2 tablespoons butter
1 small onion — peeled and chopped
2 cups long-grain white rice
3 3/4 cups vegetable or chicken stock
1/4 cup fresh lime juice
2 teaspoons grated lime rind

chopped fresh parsley or cilantro

Melt butter in heavy large saucepan over medium heat. Add onion and saute until tender, about 10 minutes. Add rice and stir to coat. Add stock, lime juice and lime peel. Bring to boil, stirring occasionally. Reduce heat to low, cover and cook until rice is tender and liquid is absorbed, about 20 minutes. Remove from heat and let stand covered 5 minutes. Season to taste with salt and pepper and add cilantro.