thai red curry and beef soup

This soup is fantastic!

thai red curry and beef soup (adapted from Real Simple,  March 2013)
8 ounces rice noodles or brown rice noodles (I like the kind from Costco)
1 pound thin sliced sirloin steak, cut into strips (I used 2 pounds)
1 sweet potato, cut into 1-inch pieces
1 onion, cut in half then sliced
2 tablespoons canola oil
4 cups chicken broth
1 (15 ounce) can light coconut milk

3 tablespoons red curry paste
2 tablespoons Asian fish sauce
1 tablespoon lime juice
fresh basil

Cook noodles.  Brown onion, sweet potato and steak in oil.  Add chicken broth, coconut milk, red curry paste and fish sauce.  Simmer until potato is tender, 8 minutes.  Stir in the noodles and lime juice.  Serve with fresh basil.