Baked Ziti

As I explore different recipes and try to determine which recipe really is my "go to" recipe, I am trying out different versions of some of my favorites. They may not always be "skinny," but I think that a good cook needs two versions of things - the real version of a favorite and a skinny version.
The original version of this Baked Ziti recipe was from AllRecipes.com. I really enjoyed the casserole overall. As I was looking for which version I wanted to cook, I was very skeptical of the sour cream as an ingredient. The sour cream gave it a slightly unique taste but also made it incredibly creamy. This dish was delicious, however I look forward to continuing to search and seeing if this really was my favorite.

Ingredients:

1 pound dry ziti pasta
1 onion, chopped
1 pound lean ground beef
2 (26 ounce) jars spaghetti sauce
6 ounces provolone cheese, sliced
1 1/2 cups sour cream
6 ounces mozzarella cheese, shredded
2 tablespoons grated Parmesan cheese

Directions:

1. Bring a large pot of lightly salted water to a boil. Add ziti pasta, and cook until al dente, about 8 minutes; drain.

2. In a large skillet, brown onion and ground beef over medium heat. Add spaghetti sauce, and simmer 15 minutes.

3. Preheat the oven to 350 degrees F (175 degrees C).

4. Butter a 9x13 inch baking dish.

5. Layer in the following order: 1/2 of the ziti, sauce, provolone cheese, sour cream, 1/2 sauce mixture, remaining ziti, mozzarella cheese and remaining sauce mixture. Top with grated Parmesan cheese.

6. Bake for 30 minutes in the preheated oven, or until cheeses are melted.

It comes out of the oven looking like this... enjoy!