Crunchy au Gratin Potatoes - Master recipes

Ingredients

• 2 large onions, thinly sliced -
• 2 tablespoons butter -
• 1 cup half-and-half cream -
• 1 cup canned pumpkin -
• 1 tablespoon prepared horseradish -
• 1/2 teaspoon ground nutmeg -
• 1 teaspoon salt -
• 1/2 teaspoon pepper -
• 2-1/4 pounds potatoes, peeled and cut into 1/4-inch slices -
• 2 cups soft bread crumbs -
• 8 ounces Gruyere or Swiss cheese, shredded -
• 2 tablespoons chopped fresh sage -