Chicken rotini tetrazzine

Chicken Rotini Tetrazzine 

Ingredients:
 * 3 cups (8oz) rotini uncooked
 * 2 tablespoons butter
 * 1/2 cup onion
 * 1 each chicken bouillon cube
 * 1 cup hot water
 * 1 can condensed cream of mushroom soup
 * 1/2 lb cooked chicken
 * 1 cup sliced mushrooms
 * 1 teaspoon parsley
 * 1/2 cup grated parmesan cheese

Directions: Cook pasta according to package directions, drain. Meanwhile, in large saucepan over medium heat, melt butter, add onion. Cook 3 minutes or until tender. Dissolve chicken bouillon cube in hot water; add to onion mixture. Stir in remaining ingredients heat to boiling stirring until sauce is smooth. Remove from heat and stir in cheese. Toss hot pasta and sauce. 6 servings.