Easy Homemade Pot Pie Recipe - Manx Herring Pie

Ever craved a hearty, comforting meal that’s a little out of the ordinary but still feels like home? Get ready for our delicious homemade pot pie recipe featuring a twist on a classic: the Isle of Man Herring & Potato Puff Pastry Pie! This isn't just any fish pie; it's a savory, flaky delight inspired by the Manx tradition of pairing herring with creamy potatoes and sweet onions, all tucked under a golden, crisp puff pastry crust.
What makes this easy pot pie recipe truly special? We’ve swapped the traditional shortcrust for an incredibly simple and satisfying puff pastry top, making it super friendly for home cooks. The filling is rich and creamy, but never runny, ensuring every bite is perfect. Plus, we've made it simple to find delicious, US-friendly fish options so you can make pot pie with ease. If you’re looking to bake a pot pie that’s both unique and utterly comforting, you’ve found your next favorite dish. It’s a simple pot pie recipe that delivers big on flavor and flaky texture!

Ingredients

• For the Filling
• 1 lb (approx. 450g) smoked herring or kippers, skin and bones removed, flaked (smoked haddock is the closest swap, or use firm white fish like cod with a small portion of smoked fish for flavor)
• 1.5 lbs (approx. 680g) Yukon Gold potatoes, peeled and cut into ½-inch cubes (or russet potatoes)
• 1 large yellow onion, finely chopped (or 2-3 leeks, white and light green parts, thinly sliced)
• 2 tablespoons unsalted butter
• 2 tablespoons all-purpose flour (for thickening)
• 2 cups whole milk (or half-and-half for extra richness)
• 1 teaspoon Dijon mustard (just a small amount for depth, not dominant flavor)
• ¼ cup fresh parsley, chopped
• ½ teaspoon freshly ground black pepper
• Pinch of mace (optional, but adds authentic warmth)
• 1 teaspoon lemon zest (optional, but brightens the flavors beautifully)
• For the Crust
• 1 sheet store-bought puff pastry (from a 17.3 oz/490g package), thawed in the fridge
• 1 large egg, whisked with 1 tablespoon water (for egg wash)

Directions

1. Equipment You'll Need:
   1. Deep pie dish (9-inch round) or 9x9-inch square baking dish
   2. Medium saucepan and whisk
   3. Baking sheet (to place the pie dish on during baking)
2. Let's Get Cooking!
3. Thaw the Puff Pastry: First things first, get your puff pastry out of the freezer and into the fridge. It needs to thaw safely for several hours or overnight. Keep it cold until you’re ready to use it!
4. Par-Cook the Potatoes: Place the cubed potatoes in a saucepan, cover them with cold water, and add a pinch of salt. Bring to a boil, then reduce heat and simmer until the potatoes are just tender when pierced with a fork, about 10-15 minutes. Drain them very well and set aside. You don't want any extra water in your filling!
5. Prep the Fish: While the potatoes cook, quickly remove any skin or bones from your smoked herring or kippers. Gently flake the fish into bite-sized pieces. Be careful not to over-flake it; we want some nice chunks!
6. Make the Thick White Sauce Base: In your clean saucepan, melt the butter over medium heat. Add the chopped onion (or leeks) and cook until softened and translucent, about 5-7 minutes. Stir in the flour and cook for 1 minute, stirring constantly, to create a roux. Gradually whisk in the milk (or half-and-half), ensuring no lumps form. Continue to cook, whisking occasionally, until the sauce thickens and gently bubbles, about 5-8 minutes.
7. Season the Sauce & Combine Filling: Remove the sauce from the heat. Stir in the Dijon mustard, fresh parsley, black pepper, optional mace, and lemon zest. Taste the sauce before adding the fish. Smoked fish can be quite salty, so season the sauce lightly now, and you can adjust the final saltiness later if needed. Gently fold in the drained potatoes, cooked onion, and flaked fish. Mix carefully to combine without breaking up the fish too much. Let the filling cool for 10-15 minutes; this is crucial for a non-soggy crust!
8. Assemble the Pie: Preheat your oven to 400°F (200°C). Place an empty baking sheet in the oven to preheat – this helps with a crisp bottom crust. Spoon the cooled filling into your deep pie dish. Carefully unroll the thawed puff pastry sheet over the top of the filling. Trim any excess pastry, leaving about a ½-inch overhang. Crimp the edges to seal the pastry to the rim of the dish. Cut a few slits in the center of the pastry to allow steam to escape during baking.
9. Egg Wash: In a small bowl, whisk the egg with 1 tablespoon of water. Brush the top of the puff pastry evenly with the egg wash; this gives it that beautiful golden sheen.
10. Bake to Golden Perfection: Carefully transfer the pie dish onto the preheated baking sheet in the oven. Bake for 30-35 minutes, or until the puff pastry is deep golden brown, puffed up, and the filling is bubbling around the edges. If the pastry starts to brown too quickly, you can loosely tent it with foil.
11. Rest Before Slicing: Once baked, remove the pie from the oven and let it rest for at least 10-15 minutes before slicing and serving. This allows the filling to set and prevents it from being too runny. Enjoy your delicious quick and easy pot pie!