Baked Chicken Penne

From MarthaStewart.com
I LOVE this recipe! It turned out great and everyone ate it up...no leftovers!

I doubled the recipe and made a 14 x 9 pan and froze an 8 x 10 pan for later.

Serves 8
6 tablespoons butter, plus more for baking dishes
coarse salt and ground pepper
1 pound penne pasta
1 teaspoon olive oil
2 boneless, skinless chicken breast halves (8 ounces each), halved horizontally
1/2 cup plus 2 tablespoons all-purpose flour (spooned and leveled)
4 garlic cloves, minced
6 cups whole milk
10 ounces white mushrooms, trimmed and thinly sliced
1/2 cup oil-packed sun-dried tomatoes, drained and thinly sliced
1 1/2 cups shredded provolone (8 ounces)
1 cup finely grated Parmesan (8 ounces)
(I used 2 of the Kraft Parmesan/Provolone 8 0z Cheese bags)

Directions
1.Preheat oven to 400. Butter two shallow 2-quart baking dishes. In a large pot of boiling salted water, cook pasta 3 minutes short of al dente; drain pasta, and return to pot.
2.In a large nonstick skillet, heat oil over medium-high. Season chicken with salt and pepper; cook until opaque throughout, 3 to 5 minutes per side. Halve each piece lengthwise, then thinly slice crosswise.

3.In a 5-quart Dutch oven or heavy pot, melt butter over medium. Add flour and garlic; cook, whisking, 1 minute. While whisking, gradually add milk; bring to a simmer, whisking frequently. Add mushrooms and tomatoes; cook 1 minute. Off heat, gradually stir in provolone and 1/2 cup Parmesan.

4.Add chicken and pasta to pot; season with salt and pepper. Divide pasta mixture between baking dishes; sprinkle each with cup Parmesan.
5.Bake, uncovered, until top is golden and bubbling, about 25 minutes. Let stand 5 minutes before serving.

6.Prepare through step 4; let cool. Cover tightly with foil, and freeze, up to 3 months.

7.Preheat oven to 400, and bake (still covered in foil) on a rimmed baking sheet until center is hot, about 1 1/2 hours. Remove foil; bake until golden, about 15 minutes more.