In a large skillet, saute onion in butter until tender. Add garlic and cook 2 minutes. Add soup, cream cheese,cream amd milk; cook and stir just until cream cheese is melted. Stir in the mushrooms, cheesed and spices. Cook just until cheeses are melted. Add turkey and penne and heat through
Transfer to a greased 2 1/2-qt. baking dish. In a small bowl combine topping ingredients and sprinkle of pasta mixture. Bake at 35 minutes for 25 min. Uncover, bake 10-15 minutes longer or until golden brown.