Combine soup, milk, onion, and pepper.
Heat slowly; stir often.
Add cheese; stir until melted.
Cut potatoes in half lengthwise.
Scoop out insides; place in bowl.
Add soup mixture slowly; mix until blended and fluffy.
Fold in crab meat.
Spoon into potato shells.
Bake on cookie sheet in a 450° oven 15 minutes.
Sprinkle with paprika.