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Bulb Onion recipes

4 ways through a glut of bulb onion, ready June to August. Sides, mains, preserves for the ones you can't eat fast enough.

Onion Jam

Sweet, sticky, deeply savory onion jam — the kind of condiment that makes a cheese board transcendent and a burger unforgettable. The onions are cooked down with brown sugar, balsamic vinegar, and thyme until they become a thick, glossy, complex spread. Make a big batch in summer when onions are at peak sweetness and keep it on hand all season.

1 h · easy · Bulb Onion
Alsatian Onion Tart

Inspired by the tarte flambée of Alsace, this savory tart fills a crisp, buttery pastry shell with a silky custard of slowly cooked onions, crème fraîche, eggs, and gruyère — a sophisticated balance of sweet onion, rich cream, and nutty cheese. It is elegant enough for a dinner party starter and satisfying enough to anchor a light supper alongside a crisp green salad. Prepared in advance and served at room temperature, it is also an ideal make-ahead dish.

1 h 30 min · medium · Bulb Onion
Classic French Onion Soup

The definitive French onion soup — deeply caramelised onions slow-cooked in beef broth with wine and thyme, ladled into crocks and topped with toasted baguette and a thick blanket of Gruyère grilled until bubbling and golden. This recipe is unhurried and deliberate; the forty-five minutes of slow caramelisation are entirely non-negotiable and entirely worth it. It is one of the great classic dishes of the home kitchen.

1 h 30 min · medium · Bulb Onion
French Onion Soup

Deeply caramelized yellow onions simmered in rich beef broth and crowned with toasted baguette slices and melted Gruyère cheese — this is the ultimate cold-weather bowl of comfort. Patience is the key ingredient: slow-cooking the onions for nearly an hour builds a sweetness and depth that no shortcut can replicate. Broiling the assembled crocks until the cheese is bubbling and golden completes a dish that has defined bistro cooking for generations.

1 h 30 min · medium · Bulb Onion

Bulb Onion coming out of your ears?

Log the harvest in the app and it lines up every bulb onion recipe it has, 2,482 more than are on this site, then reminds you what's in the freezer before it's forgotten.

Track your Bulb Onion from packet to plate

Sowing reminders and harvest forecasts for your own frost dates, the Seed Tin, Scan Centre for any label or packet, and the Potty Mouth Garden Club. Free to start.

Tony C Smith
Tony C Smith

Allotment keeper in the North East of England, the voice behind the Tony C Smith YouTube channel, and the gardener who built GrowMore CookMore. Club numbers on this page update as members log their plots. Last updated 4 September 2026.