Mader's Dumplings

Source: Mader?s German Restaurant ? Milwaukee, Wisconsin

4 to 5 russet potatoes, unpeeled
1 to 1 1/2 cups flour (divided)
1 egg
1 tablespoon salt
Pinch of black pepper
1/2 teaspoon grated onion
Stuffing croutons (do not use seasoned croutons)

Cook potatoes in boiling water until tender; drain and cool. Refrigerate overnight.

The next day, peel and grate potatoes. Add 1 cup flour, egg, salt, pepper and onion; mix until smooth. Add additional flour gradually to form dumpling mixture that will hold together. Form into balls the size of an egg. Insert 2 to 3 croutons into each dumpling, then again form into a ball. When ready to cook, drop dumplings into gently boiling salted water and cook 8 to 10 minutes. Dumplings are done when they turn and float to top and are no longer gummy inside.