Aubergine and Onion Vegetable Pie

Introduction

This vegetable pie combines a buttery, hand-worked pastry crust with layers of browned aubergines, onions, mushrooms, and raw tomatoes, all bound together with a simple egg and cream custard. The filling takes about 20 minutes to prepare and cook, making this a practical weeknight dinner or lunch that serves 4–6 and uses ingredients most home cooks already have on hand.

Recipe Details

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

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

• Add fresh herbs: Scatter torn basil, parsley, or dill over the vegetables before pouring the custard to add brightness and aroma without changing the structure.
• Use a mix of cheeses: Replace all grated cheese with half Gruyère and half Parmesan for deeper, more complex flavor while maintaining the melting and browning properties.
• Roast instead of pan-brown: Spread vegetables on a sheet pan, toss with oil, and roast at 200°C for 15 minutes instead of stovetop cooking; this caramelizes the aubergines and onions more evenly and cuts active cooking time.
• Double the custard: Increase the egg yolk to 2, milk to ½ cup, and cream to ¼ cup for a richer, more custardy filling that sets like quiche rather than a light topping.
• Replace mushrooms with zucchini: Slice zucchini thinly and treat it the same way as the aubergines; it cooks faster, so add it partway through browning to avoid mushiness.

Tips for Success

• Soften the butter correctly: Leave it at room temperature for 30 minutes—cold butter won’t blend into the flour smoothly, and overly soft butter will make the pastry greasy and difficult to roll.
• Don’t skip the pre-bake: Baking the crust for 10 minutes before adding filling prevents it from staying doughy at the bottom; the foil liner keeps it from puffing up unevenly.
• Keep tomatoes raw: Sliced tomatoes release water when cooked, which can make the filling soggy; adding them fresh just before the custard keeps their texture intact.
• Test the custard set: After 15 minutes, gently shake the pie—the custard should jiggle slightly in the center but feel mostly set at the edges; if it still looks liquid, add another 3–5 minutes.
• Let it rest before cutting: Wait 5 minutes after removing the pie from the oven so the custard fully sets and the pie holds its shape when sliced.

Storage and Reheating

Store in an airtight container in the refrigerator for up to 3 days. The pie does not freeze well—the custard becomes watery and the crust loses its texture. To reheat, cover the pie loosely with foil and warm in a 160°C oven for 10–12 minutes until heated through, or reheat individual slices on a plate in the microwave for 45–60 seconds.

FAQ

Can I make the crust ahead?

Yes. Mix and chill the dough wrapped in plastic for up to 24 hours before rolling and assembling. You can also pre-bake the lined crust, let it cool completely, cover it, and fill it the next day.

What if I don’t have fresh cream?

Use whole milk or half-and-half in equal measure; the custard will be slightly less rich but will still set properly.

How do I know if the aubergines are cooked through?

Slice them thin (about ¼ inch) so they cook evenly in 8–10 minutes of browning. They should be soft and golden, not rubbery or pale.

Can I add meat to this recipe?

Yes. Brown 150–200 g of diced chicken or ground beef separately and scatter it over the vegetables before pouring the custard; this does not change the baking time.