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A golden-crusted vegetarian pot pie in a white dish with a slice removed, revealing creamy filling with peas, carrots, mushrooms, and corn.
Layla

Hearty Vegetarian Pot Pie with Flaky Crust

A comforting, savory vegetarian pot pie packed with vibrant vegetables and a rich, creamy sauce, all topped with a golden, flaky puff pastry crust. Perfect for a cozy and satisfying family dinner.
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Prep Time 30 minutes
Cook Time 45 minutes
Total Time 1 hour 15 minutes
Servings: 6 servings
Course: Main Course
Cuisine: American
Calories: 480
Ingredients Equipment Method Notes

Ingredients
  

For the Puff Pastry Crust
  • 1 sheet frozen puff pastry thawed according to package instructions
  • 1 large egg beaten, for egg wash
For the Creamy Vegetable Filling
  • 2 tbsp olive oil
  • 1 medium yellow onion diced
  • 2 carrots peeled and diced
  • 2 celery stalks diced
  • 2 cloves garlic minced
  • 8 oz cremini mushrooms sliced
  • 1/4 cup all-purpose flour
  • 1 cup vegetable broth low sodium preferred
  • 1/2 cup milk dairy or unsweetened non-dairy (e.g., oat, soy)
  • 1 tsp dried thyme
  • 1/2 tsp dried rosemary crushed between your fingers
  • 1 cup frozen peas
  • 1 cup frozen corn
  • Salt to taste
  • freshly ground black pepper to taste
  • 1/4 cup fresh parsley chopped, for garnish (optional)

Equipment

  • 9-inch pie dish (or oven-safe skillet)
  • Large saucepan
  • Measuring cups and spoons
  • Cutting board
  • Sharp knife
  • Whisk
  • Pastry brush (optional)

Method
 

Prepare for Baking
  1. Preheat your oven to 400°F (200°C). If using a pie dish, lightly grease it.
Cook the Vegetables
  1. Heat the olive oil in a large oven-safe skillet (if using for baking directly) or a large saucepan over medium heat. Add the diced yellow onion, carrots, and celery. Cook for 5-7 minutes, stirring occasionally, until the vegetables begin to soften.
  2. Add the minced garlic and sliced cremini mushrooms to the skillet/saucepan. Continue to cook for another 5-8 minutes, stirring occasionally, until the mushrooms are tender and have released most of their moisture.
Make the Creamy Sauce
  1. Sprinkle the all-purpose flour over the cooked vegetables, stirring constantly for 1 minute to cook out the raw flour taste and create a roux.
  2. Gradually whisk in the vegetable broth until the mixture is smooth and no lumps remain. Slowly add the milk, continuing to whisk until the sauce begins to thicken.
  3. Stir in the dried thyme and crushed dried rosemary. Bring the mixture to a gentle simmer, then reduce the heat to low and cook for 2-3 minutes, stirring occasionally, until the sauce is thick and creamy.
  4. Stir in the frozen peas and frozen corn. Season the filling generously with salt and freshly ground black pepper to taste. Taste and adjust seasonings as needed.
Assemble the Pot Pie
  1. If you cooked the filling in a saucepan, transfer it to your prepared 9-inch pie dish. If you used an oven-safe skillet, simply ensure the filling is evenly distributed.
  2. Carefully unroll the thawed puff pastry sheet and place it over the filling. Trim any excess pastry, leaving about a 1/2-inch overhang. Crimp the edges of the pastry to seal it against the rim of the dish.
  3. Using a sharp knife, cut a few small slits in the center of the puff pastry crust. This allows steam to escape during baking and prevents the crust from puffing up excessively.
  4. In a small bowl, beat the large egg. Using a pastry brush (or your fingers), lightly brush the top of the puff pastry with the beaten egg wash. This will give it a beautiful golden-brown shine.
Bake and Serve
  1. Bake in the preheated oven for 25-30 minutes, or until the puff pastry crust is deeply golden brown and the filling is bubbling hot. If the crust starts to brown too quickly, you can loosely tent it with aluminum foil.
  2. Remove the pot pie from the oven and let it stand for 5-10 minutes before serving. This allows the filling to set slightly and prevents it from being too runny.
  3. Garnish with fresh chopped parsley, if desired, and serve warm.

Notes

For a richer flavor, add a splash of white wine to the vegetables after they've softened, letting it reduce completely before adding the flour. You can easily adapt this recipe with other vegetables like diced potatoes, green beans, or sweet potatoes. Leftovers can be stored in an airtight container in the refrigerator for up to 3-4 days and reheated in the oven or microwave.