Melt butter in skillet. Stir in flour. Gradually add milk and bouillon; cook until thickened. Add cheese. Stir until cheese is melted; remove from heat.
Put toast in flat baking dish. Put turkey and ham on toast. Spoon cheese sauce over meat.
Bake 10 minutes.
Top with bacon and tomato slices; bake 5 minutes more.
Sprinkle with Parmesan and paprika before serving.