Amazing Quiche Lorraine

Quiche Lorraine traces back to the Lorraine region of northeastern France, where the original recipe didn’t include cheese at all, just bacon, eggs, and cream in a pastry shell. The cheesy American version is a delicious offshoot, and this one keeps the bacon as the star while adding Swiss and a touch of Parmesan for depth.

Sauteing the onion in bacon drippings rather than butter is the move that quietly transforms this. The smoky pork fat carries flavor into the onion that no clean butter can replicate, and the result is a base that already tastes layered before any other ingredient hits the pan.

Half-and-half is the right richness here, not heavy cream and not whole milk. Cream alone bakes into a heavy, almost cheesecake-like custard, while milk weeps water as it cools. Half-and-half hits the sweet spot of silky and sliceable.

The Parmesan is more flavor enhancer than featured cheese. Just ¼ cup adds salty, nutty undertones that make the Swiss taste even more pronounced, similar to how a pinch of salt sharpens sweet flavors.

Blind bake the pie shell for 5 to 10 minutes if you want to avoid a soggy bottom. The wet custard otherwise turns the pastry from crisp to limp.

Pro Tips

• Bring eggs and cream to room temperature for an even, silky custard. Cold ingredients curdle when poured over warm fillings.
• Use thick-cut bacon and crisp it well. Limp bacon disappears in the custard, while crisp pieces stay distinct.
• Test with a knife inserted near the center, it should come out clean but the very center can still wobble slightly. Carryover heat finishes the cook.
• Let the quiche rest 15 minutes before slicing for cleanest cuts and the custard fully sets.

Variations

• Stir in a handful of sauteed sliced mushrooms or fresh thyme for additional savory notes.
• Swap Swiss for Gruyere for a more pronounced nutty flavor.
• Add a layer of caramelized onions under the cheese for sweeter, richer depth.