Aubergine and Onion Vegetable Pie

PIn it

Introduction

This vegetable pie combines a buttery, hand-worked crust with layers of sautéed aubergine, onions, and mushrooms topped with a custard-cream mixture and melted cheese. The filling is simple enough for a weeknight dinner but structured enough to work as a centerpiece for a vegetarian meal or a substantial side dish.

Recipe Details

• Prep Time: 25 minutes
• Cook Time: 35 minutes
• Total Time: 60 minutes
• Servings: 4–6

Ingredients

Crust

• 250 g (1 cup) flour
• 100 g (0.4 cups) medium-soft butter (leave it out for a half-hour before making the crust)
• 1 egg
• Lukewarm water
• 1 pinch of salt

Filling

• 1-2 aubergines (eggplants)
• 1-2 onions
• 4 tomatoes
• 150 g (0.6 cups) of mushrooms
• Grated cheese
• Milk
• 1 egg yolk
• Fresh cream

Instructions

Crust

1. Add the flour to a large bowl.
2. Add the butter, and rub it into the dough with your fingers until the pastry is nearly consistent in texture.
3. Add the egg, then some water bit by bit while working the pastry with your hands until it becomes soft and smooth. It should not be sticky, and it should look shiny and medium-yellow.

Filling

1. Cut the vegetables into thin slices.
2. Brown the vegetables in oil or butter or steam them, starting with the onions and aubergines (eggplant), then the mushrooms. Keep the tomatoes raw.

Assembly

1. Roll the dough out about ⅛-¼ inch thick.
2. Butter a pie pan and fit the dough into the pan. Prick the dough all over with a fork, and line it with some aluminum foil in a curved shape.
3. Pre-bake the crust for about 10 minutes in a medium oven.
4. Take the crust out of the oven, and arrange the vegetables over the crust in whatever arrangement pleases you.
5. In a bowl, mix the egg yolk with some milk and a bit of fresh cream, then pour the mixture on top of the vegetables.
6. Cover with grated cheese.
7. Bake for 15-20 minutes in a medium oven.

Variations

Swap the filling vegetables. Replace the aubergine and mushrooms with zucchini and bell peppers, or use only onions and tomatoes for a lighter version. The pie adapts well to whatever vegetables are in season.

Use a thicker custard topping. Increase the egg yolk to two yolks and reduce the milk slightly for a richer, more set custard layer that holds its shape better when sliced.

Add herbs to the filling. Toss the cooked vegetables with fresh thyme, oregano, or basil before arranging them on the crust for an herbaceous note.

Replace fresh cream with yogurt. Use plain yogurt in place of fresh cream for a tangy custard topping with slightly less richness.

Make individual hand pies. Divide the dough into portions, roll thin, fill with a spoonful of vegetables and custard, fold into a half-moon, and bake on a tray for about 12–15 minutes.

Tips for Success

Work the crust dough until it turns shiny and medium-yellow. This signals that the butter is evenly distributed and the dough has developed enough structure to hold together. Stop working it once it reaches this point to avoid overdevelopment, which toughens the crust.

Start with onions and aubergine first. These take longer to soften than mushrooms. Adding them in sequence ensures even cooking and prevents mushrooms from breaking down into mush.

Prick the pre-baked crust all over with a fork. This prevents it from puffing up unevenly and helps it stay flat to hold the filling without warping.

Pour the custard mixture slowly and evenly. It will seep down around the vegetables and fill gaps. If you pour too quickly, it pools in one spot and may overflow at the edges.

Watch the cheese topping in the final bake. At 15–20 minutes, it should turn golden and bubbly. If your oven runs hot, start checking at 12 minutes to prevent over-browning.

Storage and Reheating

Store leftovers covered in the refrigerator for up to 3 days. The pie is best reheated gently in a 160°C (320°F) oven, covered with foil, for 10–15 minutes until warmed through. You can also reheat a single slice in the microwave for 1–2 minutes, though the crust will be softer than oven-reheated portions. This pie does not freeze well—the crust becomes soggy and the custard layer separates when thawed.

FAQ

Can I make the crust ahead of time?

Yes. Mix and knead the dough, wrap it tightly in plastic wrap, and refrigerate for up to 24 hours. Let it come to room temperature for 10 minutes before rolling it out.

What’s the best way to slice this pie without the filling shifting?

Let the pie cool for at least 10 minutes after baking so the custard sets and holds the vegetables in place. A sharp knife dipped in hot water between cuts helps too.

Can I use frozen vegetables instead of fresh?

Thawed frozen aubergine and mushrooms work, but drain them well to remove excess moisture, which would make the crust soggy. Fresh tomatoes should not be frozen; use canned diced tomatoes if fresh are unavailable.

What type of cheese works best for the topping?

A medium-strength cheese like Gruyère, Emmental, or aged Cheddar melts evenly and adds flavor. Soft cheeses like mozzarella melt too fast and can become greasy; hard cheeses don’t melt enough for a cohesive topping.