Penne Pasta with Sausage, Tomatoes and Potatoes

0 In a large pot add the potatoes and salted water. Bring the water to a boiling and cook the penne pasta until they are al dente.
1 Meanwhile in a large deep skillet heat 1 tablespoon of the olive oil until warm, but not smoking.
2 Add the sausage to the skillet. Cook on medium high heat until nicely browned and cooked through. About 5 minutes.
3 Add the tomatoes and cook over medium low heat.
4 Add the pasta and potatoes to the skillet and add the butter and cook stirring until the pasta is well coated.
5 Transfer to bowls and serve right the way.