Blind bake the crust. Roll out your pastry, fit it into the pie dish, trim the edges, and chill it for 15-20 minutes. Preheat the oven to 375°F (190°C), prick the base, line with parchment and pie weights, and blind bake 15 minutes. Pull the weights and parchment and bake another 5-8 minutes, until the base looks dry, not damp. Check the base, not just the edges. A dry-looking base is what actually prevents a soggy bottom.
Salt the eggplant and tomato. Dice the aubergine and two of the tomatoes, spread on paper towels with a little salt, and let them sit 10-15 minutes. This isn’t really extra time, you’re chopping everything else and making the custard while it sits there.
Dice the remaining veggies. Dice the bell peppers and most of the zucchini (save a little tomato and zucchini to slice thin for the top). Try to make the pieces the same size for even cooking.
Sauté the onion and garlic in olive oil a few minutes
Add the aubergine on its own and cook it about 4 minutes. It needs a head start, it takes longer than everything else.
Add the pepper and zucchini, cook until soft.
Add the tomato last, just a couple of minutes, it’s already drained so it doesn’t need long. Stir in the herbes de Provence, cook another minute or two, take it off the heat, and stir in the basil. The mixture should look fairly dry before it goes in the crust, not wet or glossy. Otherwise your quiche will have a hard time “setting”.
Fill the pre-baked pie crust. Don’t overfill or the quiche won’t hold together, as there is not enough custard mixture to hold it together.
Make the custard. Whisk the eggs and crème fraîche together with a pinch of salt and pepper.
Assemble. Pour the custard over the top and use the extra zucchini rounds and tomato slices to decorate the top.
Bake. 20 minutes at 375°F (190°C), then choose your finish from below.
Three Ways to Finish It:
Plain. The simplest version, no cheese at all. Just keep baking after the 20 minutes, another 5-10 minutes, until it’s firm to the touch, no wobble. This is the most traditionally French version, and it lets the vegetables speak for themselves.
Baked-in cheese. Scatter gruyère, parmesan, or mozzarella over the top after the first 20 minutes, then bake another 5 minutes until melted and the custard is set. This is the easiest one for the week, it reheats and slices cleanly, good for lunches and meal prep.
Fresh goat cheese for a café-style touch perfect for company. Bake plain for the full 25-30 minutes, then once it’s out of the oven, crumble goat cheese over the top while it’s still warm.