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Potato Puff Casserole Recipe

You'd never guess that leftover mashed potatoes are the main ingredient in this delightful casserole. "I've served this elegant side dish to company," writes Sharon Skildum of Maple Grove, Minnesota. "It's so moist and light it always brings compliments."
TOTAL TIME: Prep: 25 min. Bake: 40 min. YIELD:6 servings


  • 1 small onion, chopped
  • 2 tablespoons butter or margarine
  • 1/2 cup milk
  • 1/2 teaspoon ground mustard
  • 1/4 teaspoon salt
  • 1/8 teaspoon pepper
  • 2 cups mashed potatoes (with added milk and butter)
  • 2 eggs, separated
  • 1 cup (4 ounces) shredded cheddar cheese, optional


  • 1. In a skillet, saute onion in butter until tender. Stir in milk, mustard, salt and pepper; bring to a boil. Remove from the heat; stir in potatoes and mix well. Stir in egg yolks until smooth. Cool at room temperature for 15 minutes. Stir in the cheese if desired. In a small mixing bowl, beat egg whites until soft peaks form. Fold into potato mixture. spoon into a greased 1-qt. baking dish. bake at 350° for 40-45 minutes or until puffed and lightly browned. Yield: 6 servings.

Nutritional Facts

3/4 cup: 217 calories, 15g fat (9g saturated fat), 112mg cholesterol, 488mg sodium, 15g carbohydrate (3g sugars, 2g fiber), 8g protein.

Reviews for Potato Puff Casserole

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Sally Wisdom
Reviewed May. 30, 2008

"This sounds like a wonderful recipe to take to a potluck luncheon/dinner. I'll try it next month when I go to the potluck luncheon group to which I belong!"

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