Make a delicious, vegetarian comfort food meal with this Veggie Pot Pie recipe! It's filled with tons of vegetables, in a creamy, savory sauce and topped with a crisp, buttery puff pastry crust, for a warm, flavorful vegetarian dinner.
Unfold one puff pastry sheet on a lightly floured surface.
Use a rolling pin to roll the pastry sheet into a 12-inch square.
Press the pastry into an 8 inch x 8 inch square casserole dish.
Prick the pastry thoroughly with a fork on the sides and bottom.
Place a piece of aluminum foil over the puff pastry dough in the baking dish and press down so that it covers the dough in the dish.
Place in the oven and bake for 25 minutes.
Remove from the oven and remove the aluminum foil.
While the pastry is in the oven, heat the butter in a large skillet, or dutch oven, over medium-high heat.
Once the butter is melted, add the carrots, onions and celery, cook for 4 minutes.
Add the mushrooms and garlic, and cook for an additional minute.
Add the diced potatoes and continue cooking for 7 minutes.
Sprinkle the flour over the vegetables and cook while stirring for 1-2 minutes or until the flour is golden brown.
Slowly stir in the vegetable broth and turn the heat up on the stove to high, until the broth begins to boil.
Cook and stir until the mixture boils and thickens, this will take about 10-12 minutes.
Add the peas, thyme, salt and black pepper, stir to combine.
Remove from the heat and spoon the vegetable mixture into the already cooked puff pastry in the casserole dish.
Unfold the remaining pastry sheet on a lightly floured surface and use a rolling pin to roll it out a little thinner.
Cut the pastry sheet into 6 equal strips.
Weave the strips of puff pastry over the veggie pot pie filling, tucking the excess dough inside the baking dish, or trimming any excess pastry dough that overlaps the sides of the baking dish.
Whisk the egg in a small bowl, then brush the egg over the strips of puff pastry dough.
Place in the oven and bake for 30-35 minutes, or until the puff pastry crust is golden brown.
Notes
Always make sure to thaw the puff pasty dough before starting the recipe. Remove the box of dough from the freezer, then remove the sheets of dough from the packaging. Allow them to thaw at room temperature for 30-45 minutes before starting the recipe.
Make sure to trim any puff pastry dough from the bottom layer that overlaps the edge of the pan. The dough will burn and will have to be removed after the pot pie bakes in the oven, so I recommend removing it before baking, using a sharp knife.
Always cook the pot pie on the middle rack of the oven. This will ensure even distribution of heat and will guarantee that the filling is warm and bubbly, while the puff pastry crust is brown and crispy.
The pot pie filling can be made up to 5 days in advance and stored in an airtight container, in the refrigerator, until you’re ready to assemble and bake the pot pie. I do not recommend assembling the pot pie ahead of time with the puff pastry dough, as it will affect the texture of the baked puff pastry crust.
If using low-sodium vegetable broth, I recommend adding an additional 1/2 – 1 teaspoon salt to the filling.
To make gluten free vegetable pot pie, Substitute cornstarch, or gluten free all purpose flour, for the flour in the pot pie filling and use gluten-free puff pastry dough to make the crust.