Greek Pasta

1 lb penne pasta
1 15oz can cannellini or great northern beans, rinsed
1 15oz can diced Italian tomatoes
1 9 oz pkg fresh spinach
4 oz crumbled feta cheese

In a large pot, cook pasta according to package directions.  In a large skillet over medium heat, bring tomatoes and beans to a bubble.  Add spinach and cover until wilted.  Stir in the pasta.  Crumble feta over the dish before serving.  Serves four.