Baked Penne with Sausage and Apple

I have this little scrap of a magazine so I don't know what magazine that I got this from but this turned out really good!  There must have been a picture for me to have cut it out but I didn't have it with the recipe.  It's easy to put together and can even be assembled ahead of time and cooked later with adding a little extra time to bring it to temp.

BAKED PENNE WITH SAUSAGE AND APPLE

1 lb. penne cooked as directed, saving 3/4 cup of pasta water before draining
2 Tbsp. butter
2 large Granny Smith apples, peeled, cored and sliced
12 oz. kielbasa, cut into coins
1 medium onion, thinly sliced
2 Tbsp. honey mustard
1/4 tsp. salt
1/4 tsp. pepper
2 cups shredded Gouda cheese, divided
1/3 cup grated Parmesan cheese

Melt butter over medium high heat in a large frying pan.  Add apples, kielbasa and onion.  Cook for about 5 minutes until the onion is softened and lightly golden.  Toss the cooked pasta with the apple mixture, reserved pasta water, honey mustard and salt and pepper.  Fold in 1 cup shredded Gouda cheese and transfer to a greased 3 quart baking dish.  Top with 1 more cup shredded Gouda and the Parmesan cheese.  Bake at 350 degrees F for 30 minutes.  Broil 4 minutes, if desired, to brown top.