Description
This Potato Knish Casserole is a hearty, comforting dish with layers of tender mashed potatoes, golden flaky puff pastry, and savory sautéed onions. It’s a simpler take on the traditional potato knish, perfect for a cozy dinner, a family gathering, or a special occasion. Serve it warm with a side of salad or pickles for the ultimate comfort meal.
Ingredients
- Potatoes (starchy variety like Russet) – 4 cups (peeled and chopped)
- Puff pastry – 2 sheets (thawed)
- Onion – 1 medium (finely chopped)
- Butter – 1/4 cup (for mashed potatoes) + 1 tbsp (for sautéing onion) + extra for brushing
- Eggs – 2 large
- Salt – 1 tsp (to taste)
- Pepper – 1/2 tsp (to taste)
Instructions
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Prepare the Potatoes: Peel and chop the potatoes into even chunks. Place them in a large pot, cover with water, and bring to a boil. Cook for 15-20 minutes until tender and easily mashed. Drain and return the potatoes to the pot.
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Mash the Potatoes: Mash the potatoes until smooth. Add butter, eggs, salt, and pepper, and mix until fully combined. The consistency should be creamy, not too runny.
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Sauté the Onion: In a small skillet, melt 1 tbsp of butter over medium heat. Add the finely chopped onion and sauté for 5-7 minutes until soft and golden. Set aside.
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Layer the Casserole: Preheat the oven to 375°F (190°C). Grease a 9×13-inch casserole dish. Lay one sheet of puff pastry at the bottom. Spread a layer of mashed potatoes on top, then sprinkle sautéed onions over the potatoes. Place the second sheet of puff pastry on top, gently pressing down to seal the layers.
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Bake the Casserole: Place the casserole in the preheated oven and bake for 25-30 minutes, until the top is golden brown and crispy.
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Serve: Let the casserole cool for a few minutes before slicing into squares. Serve warm with a side of fresh salad, pickles, or roasted vegetables.
Notes
- Starchy Potatoes: Russet potatoes work best for a smooth, fluffy mashed texture.
- Cheese Addition: Sprinkle grated cheddar or Parmesan on the mashed potatoes before layering for extra flavor.
- Ahead of Time: The casserole can be assembled a day before and stored in the fridge. Just bake when ready to serve.
- Make it Vegan: Use dairy-free butter and egg substitutes for a vegan version.
Nutrition
- Serving Size: 1 square (about 1/8th of the casserole)
- Calories: 310
- Sugar: 2g
- Sodium: 250mg
- Fat: 18g
- Saturated Fat: 9g
- Unsaturated Fat: 7g
- Trans Fat: 0g
- Carbohydrates: 35g
- Fiber: 4g
- Protein: 5g
- Cholesterol: 55mg