Chicken Tetrazzini

1 tablespoon  butter
1 cup finely chopped onion
2/3 cup finely chopped celery
1 teaspoon ground black pepper
3/4 teaspoon salt
3 8-ounce packages pre-sliced mushrooms
1/2 cup dry sherry
2/3 cup all-purpose flour
3 14.5 ounce cans fat free, low sodium chicken broth
2-1/4 cups grated fresh Parmesan cheese, divided
1/2 cup 1/3-less-fat cream cheese
7 cups hot cooked vermicelli (1 pound)
4 cups chopped cooked chicken breast (about 1-1/2 pounds)
1 1-ounce slice white bread
Preheat oven to 350 degrees.

Melt butter in large stockpot coated with cooking spray over medium high heat.  Add onion, celery, pepper, salt, and mushrooms; sauté 4 minutes or until mushrooms are tender.  Add sherry; cook 1 minute.

Lightly spoon flour into a measuring cup; level with a knife.  Gradually add flour to pan; cook 3 minutes, stirring constantly (mixture will be thick).  Gradually add broth, stirring constantly.  Bring to a boil.  Reduce heat, simmer 5 minutes, stirring frequently.  Remove from heat.

Add 1-3/4 cups Parmesan cheese and cream cheese, stirring with a whisk until cream cheese melts.  Add the pasta and chicken, and stir until blended.  Divide the pasta mixture between 2 - 8 inch square baking dishes coated with cooking spray.

Place bread in food processor; pulse 10 times or until coarse crumbs form. Combine breadcrumbs and 1/2 cup Parmesan cheese; sprinkle evenly over pasta mixture.

Bake at 350° for 30 minutes or until lightly browned. Remove casserole from oven; let stand 15 minutes.

To freeze unbaked casserole: Prepare through Step 5. Cool completely in refrigerator. Cover with plastic wrap, pressing to remove as much air as possible. Wrap with heavy-duty foil. Store in freezer for up to 2 months.

To prepare frozen unbaked casserole: Thaw casserole completely in refrigerator (about 24 hours). Preheat oven to 350º. Remove foil; reserve foil. Remove plastic wrap; discard wrap. Cover casserole with reserved foil; bake at 350º for 30 minutes. Uncover and bake an additional 1 hour or until golden and bubbly. Let stand 15 minutes.

Yield: 2 casseroles, 6 servings each (serving size: about 1 1/3 cups)

Per serving:  380 Calories;  33g protein; 12.2g Total Fat;  32.7g Carbs;  964mg Sodium; 2g Fiber