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–+ servings
Potato Soufflé
Potato Soufflé is a light, airy variation on mashed potatoes that transforms simple ingredients into an elegant dish. This recipe, sent by mail in the early 1990s, features whipped egg whites folded into a seasoned potato mixture, creating a puffy, golden-topped casserole. It's ideal as a side for roasted meats or holiday dinners. The texture lies somewhere between mashed potatoes and a soft casserole, making it both familiar and elevated. Optional variations include topping with cheese or sautéed onions for added depth.
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Prep Time 15 minutes
Cook Time 25 minutes
Total Time 40 minutes
Course Side Dish
Cuisine American
Servings 4
Calories 195 kcal

Ingredients
  

  • 2 cups mashed potatoes (hot )
  • 2 tbsp butter
  • 2 eggs (separated)
  • 1 cup milk
  • ½ tsp salt (inferred for seasoning)

Optional:

  • 2 tbsp cheese (grated, mixed in first step)
  • 1 tbsp onion (gratred, mixed in first step)

Instructions
 

Step 1: Prepare the Base

  • Mash hot potatoes with butter until smooth.
  • Mix in optional cheese and grated onion if using.

Step 2: Add Yolks and Milk

  • Beat egg yolks and mix them into the potato mixture. Stir in the milk until smooth.

Step 3: Whip the Egg Whites

  • In a separate bowl, beat egg whites until stiff peaks form.

Step 4: Fold In Egg Whites

  • Gently fold beaten egg whites into the potato mixture until fully incorporated.

Step 5: Season and Prepare Dish

  • Add salt and any additional seasoning if desired. Pour mixture into a greased baking dish.

Step 6: Bake

  • Bake at 325°F for 20–30 minutes until puffed and lightly golden.

Tips

  • Use hot mashed potatoes so the milk and egg yolks blend smoothly
  • Beat egg whites to stiff peaks for maximum lift
  • Fold whites gently to keep the mixture airy
  • Add grated cheese gradually to prevent clumping
  • Bake immediately after folding in egg whites
  • Use a buttered soufflé or casserole dish for easy release
  • Let rest 5 minutes before serving for cleaner slices
  • Substitute half-and-half for richer texture
  • Add finely chopped onions or chives for flavor
  • Serve as a side dish or light main course

Nutrition

Calories: 195kcalCarbohydrates: 20gProtein: 6gFat: 10gSaturated Fat: 5gPolyunsaturated Fat: 1gMonounsaturated Fat: 3gTrans Fat: 0.2gCholesterol: 95mgSodium: 230mgPotassium: 470mgFiber: 2gSugar: 3gVitamin A: 520IUVitamin C: 12mgCalcium: 70mgIron: 1mg
Keyword baked dish, Cheese, comfort food, eggs, family favorite, potato casserole, retro cooking, vintage recipe
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