Easy Stroganoff

Back by popular demand . . . :)  Modified slightly from Valley View Ward Relief Society cookbook.

~1 lb. hamburger
1 onion, diced
2 T. flour
2 beef bouillon cubes
2 c. water
3/4 t. salt
1/4 t. pepper
1 T. mustard
1 T. worcestershire sauce
1 T. ketchup
1 c. sour cream

Saute meat and onions; add remaining ingredients except sour cream. Cook until thickened and bubbly; add sour cream.  Serve over noodles or rice.