Penne Pasta with Spinach

Last night, it got a little bit cold and rainy so I decided the grill was not the best option.  Instead, I put together a pasta that turned out very well. 

Ingredients:

1 lb     Spicy Breakfast Sausage (Italian Sausage would work fine)
2 14.5 oz cans Diced Tomatoes
1 bag   Spinach - uncooked
1/2      Medium Sweet Onion - diced
1 tbsp  Minced Garlic
Olive Oil
Oregano - to taste
Salt
1 lb      Penne Pasta

Brown the sausage over a medium high heat. Remove from the pan.  If needed, add olive oil to the pan along with  the onion and garlic and sprinkle with salt.  Stir frequently until the onions soften.  Add the spinach into the mixture and continue cooking and stirring until the spinach begins to wilt.  Add the tomatoes and sausage back to the mixture along with the oregano.  Cook the pasta to completion in a separate pot per directions on the pasta.  Drain the pasta and add to the sauce.  Stir to blend and serve.  Top with Parmesan Cheese and serve.