Cook pasta according to the directions on the box.

Brown kielbasa in a pan. Over medium heat, add butter, minced garlic, heavy cream, tomato sauce, tomato paste, Parmesan cheese, Italian seasoning, salt, pepper, and garlic powder. Mix well and let simmer until the sauce thickens.

Drain pasta and combine with sauce. Add kielbasa and serve, topping with more Parmesan and dried parsley if desired.