Onion Pie
Onion pie is a savoury tart filled with sweetly caramelised onions, crispy bacon lardons, sour cream and eggs in a caraway-scented custard, all nestled in golden shortcrust pastry. The Thermomix TM7 makes light work of the filling: it confits the onions gently, mixes the egg custard evenly and blends everything to restaurant-quality consistency with minimal effort.
About this recipe
Onion pie Thermomix TM7 is a classic savoury tart that turns humble ingredients into a comforting main course worthy of a French bistro. If you are searching for onion pie recipes or an easy quiche-style dinner for your all-in-one kitchen machine, this version delivers: thin rings of onion confited until meltingly sweet, bacon lardons fried until crisp, and a golden custard of eggs and sour cream perfumed with caraway seeds. The pre-baked shortcrust base stays flaky while the filling sets silky in the oven, creating a lovely contrast between buttery pastry and savoury, aromatic centre. This pie works brilliantly for a quick weeknight dinner with a green salad, a weekend family lunch, or sliced cold for a picnic the next day. The TM7 takes care of the trickiest parts, gently cooking the onions without burning and whisking the custard evenly, so even a first-time baker gets a professional, sliceable result.
Preparation tips
- Slice the onions as evenly as possible so they confit uniformly and turn meltingly sweet rather than browning unevenly. A mandoline helps, but the TM7 bowl gives consistent pieces in seconds if you prefer hands-free preparation.
- Prick the pastry base thoroughly and keep the baking beans in place during blind baking to prevent the shortcrust from puffing up, ensuring a flat bed for the onion and bacon custard filling.
- Let the pie rest for ten minutes after baking before slicing, so the sour cream and egg custard sets firmly and each portion of onion pie comes out clean. Cold leftovers keep well in the fridge for a picnic lunch.
Recipe variations
- Vegetarian version: replace the bacon lardons with cubes of smoked tofu or sautéed mushrooms, keeping the caraway seeds for their distinctive aroma. The onion and sour cream custard remains just as creamy and satisfying.
- Festive variation: add a handful of grated Gruyère to the custard and a few thyme leaves over the onions before baking. Serve the warm onion pie as a starter at a dinner party, cut into small wedges with a dollop of sour cream.
Why this recipe works
Crafting the ultimate Onion Pie requires patience and precision, often leaving home cooks worrying about burnt caramelisation or soggy pastry. The Thermomix TM7 removes this anxiety, delivering the exact temperature control needed for perfectly golden, tender onions every time. You can achieve flawless, even chopping and consistent textures that truly impress. Say goodbye to culinary guesswork and hello to a stunning savoury pie with a rich, balanced flavour profile. Transform your kitchen into a professional space where perfection is guaranteed, not just hoped for.
Thermomix TM7 Benefits
- Weigh the shortcrust pastry ingredients directly into the TM7 bowl, so the flour and butter ratios stay exact and the crust bakes flaky every time.
- Chopping onions in the Thermomix takes just seconds, giving even rings for the pie without any tears while you prepare the pastry.
- Confiting the onions gently in the TM7 at low temperature turns them meltingly sweet and golden, exactly like a French bistro preparation.
- The TM7 blends eggs and sour cream into a silky, lump-free custard, ensuring the caraway filling sets evenly in the oven.
- Whisking the custard with the Thermomix incorporates air lightly, giving the onion pie a tender, delicate texture once baked.
Ingredients
- shortcrust pastry
- onions
- oil
- bacon lardons
- sour cream
- medium eggs
- caraway seeds
- fine sea salt