Baked Salmon in Potato Shells

1 lb canned salmon 8 medium potatoes , baked 1/2 cup milk 1 onion , chopped salt and black pepper 1 cup breadcrumbs 2 tablespoons butter 1 Flake the salmon[...]

3 cups frozen mashed potatoes , thawed 1/2 cup prechopped onion , minced 5 tablespoons basil pesto , divided 1 egg , beaten 1/2 teaspoon ground black pepper 2[...]