Establish BGE at 350°F. Indirect

On range top :

Cook macaroni, drain and set aside. Sauté onion in butter in heavy saucepan; add flour, stirring until mixture is smooth. Cook one minute, stirring constantly. Gradually add milk and wine; cook over medium heat, stirring constantly, until mixture is thickened and bubbly. Remove from heat; add salt, pepper, and 8 ounces of cheese. Stir until cheese melts. Add macaroni and mix well.

Pour into a lightly greased 2-quart casserole. Sprinkle with 4 oz. cheese, paprika and bread crumbs. Cover and bake in BGE for 15 minutes. Uncover and continue baking 15 minutes. Remove and let rest for about 10 minutes before serving.