Chicken Cordon Bleu Pasta

2 packages penne pasta, cooked to package directions
1 pkg bacon, cooked and broken into bite-sized pieces
2 pounds boneless grilled chicken breast cut into bite-sized pieces
one bunch chopped green onion
1 package fresh sliced mushrooms
2 - 4 cloves garlic, minced

Sauce:
1 cube butter
2 8 oz packages cream cheese
2 - 3 cups milk
1 1/2 cups parmesan cheese
4 cups grated mozarella cheese

prepare chicken and bacon and set aside. While pasta is cooking, saute green onions, minced garlic and mushrooms. Set aside. For sauce, melt butter, add cream cheese and milk. Cook on medium heat until simmering. Add parmesan cheese. Mix well. Remove from heat. Add cooked pasta, mushroom mixture, and chicken and bacon. Place in 2 9 x 13 pans. Sprinkle with mozarella. Place under broiler until cheese is melted and bubbly.