In A Bowl, Combine The Spaghetti, Eggs And Milk. Spread Into A Greased 15-In. X 10-In. X 1-In. Baking Pan. Top With Spaghetti Sauce, Sausage, Mushrooms, Olives And Cheese. Bake At 350 Degrees F For 30 Minutes Or Until Cheese Is Melted And Pizza Is Heated Through.