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Pennsylvania Dutch Potato Filling

A comforting casserole combining creamy mashed potatoes with savory stuffing flavors, perfect for family gatherings and holiday meals.
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Prep Time 25 minutes
Cook Time 1 hour 20 minutes
Total Time 1 hour 45 minutes
Servings: 12 servings
Course: Side Dish
Cuisine: American
Calories: 204
Ingredients Method Notes

Ingredients
  

Main Ingredients
  • 3 pounds russet potatoes, peeled and quartered Choose firm russet potatoes with smooth, dry skin.
  • 10 tablespoons unsalted butter, divided Use salted butter if unsalted is not available.
  • 1/2 large onion, diced Can substitute with shallot for a milder flavor.
  • 4 medium ribs celery, diced Can replace with diced carrots if celery is unavailable.
  • 2 slices white bread, cubed Toast lightly to avoid sogginess.
  • 1 cup milk Whole milk recommended for richness.
  • 1 large egg, beaten Add when the potato mixture is slightly cooled.
  • to taste pinch kosher salt Adjust amount based on preference.

Method
 

Preparation
  1. Preheat the oven to 350°F and grease a 9x13-inch casserole dish.
  2. Place the peeled and quartered potatoes in a large pot, cover with salted water, and boil until tender, about 15 minutes. Drain well.
  3. Melt 4 tablespoons of butter in a skillet over medium heat. Add diced onion and celery; cook for about 20 minutes until soft and golden.
  4. Toast the bread cubes in a separate pan until golden.
Assembly
  1. Mash the drained potatoes in a large bowl. Stir in the cooked onion and celery, toasted bread, remaining 6 tablespoons of butter, milk, and beaten egg. Season with kosher salt to taste.
  2. Spread the mixture in the prepared casserole dish.
Baking
  1. Bake for about 45 minutes until the top is golden brown and the filling is hot. Let stand briefly before serving.
Make Ahead and Reheat
  1. Assemble the filling in the casserole dish and refrigerate for up to 2 days before baking. To reheat, cover and warm at 350°F for 10 to 15 minutes.

Notes

Pairs well with roasted chicken, turkey, baked ham, or pork chops. Can be assembled ahead for convenience.