Sopa De Nopales (Cactus Soup)

Yield:	8 Servings
Categories:	Soups, Mexican

1	tb	Olive or salad oil
1		Large onion,chopped
1	lb	Tomatillos*
6	c	Chicken broth,reg strength
1	pk	Sliced cactus (33 oz)**
2	tb	Lime juice
2	tb	Fresh cilantro leaves,minced
2	oz	Panela/feta cheese,crumbled
		Lime wedges (opt)