Advertisement - Continue Reading Below
- 300 g (11oz) shallots
- 25 g (1oz) butter
- 300 g (11oz) red onion, cut into wedges
- 1 Tbsp. runny honey
- 150 g (5oz) button mushrooms, halved or quartered
- 2 level tbsp freshly chopped thyme, plus extra sprigs to garnish
- 1 sheet ready-rolled puff pastry
- Step 1
Put the shallots in a pan of cold water and bring slowly to the boil. (This makes them easier to peel and part-cooks them.) Drain, cool, peel and halve.
- Step 2
Melt the butter in a heavy-based frying pan, add shallots, red onion and honey. Cook over a low heat, stirring occasionally until shallots and onions are soft and dark brown - about 20min.
- Step 3
Increase heat; add mushrooms. Cook, stirring, for 2-3min. Season with salt and freshly ground black pepper and add thyme. Put onions and mushrooms into a shallow 20.5cm (8in) cake tin. Preheat oven to 220°C (200°C fan) mark 7.
- Step 4
On a lightly floured surface, roll the pastry out thinly to fit the tin, put on top of shallot mixture and trim the edges.
- Step 5
Cook tart for 20–30min or until pastry is brown and crisp. Upturn on to a plate to present it onion side up. Garnish.
More triple-tested pastry recipes:
Caramelised onion and two cheese tart
10 of the best sweet tarts
More pastry recipes
To freeze
At the end of step 4, cover in tinfoil and freeze. To serve, cook in a preheated oven at 200°C (180°C fan) mark 6 for 40min or until thoroughly hot.Per Serving:
- Calories: 320
- Total carbs: 35 g
- Sugars: 3 g
- Total fat: 18 g
- Saturated fat: 9 g

The GH Kitchen Team are Good Housekeeping’s resident recipe developers and all-round food obsessives. GH Kitchen Director Sarah Akhurst is our resident hosting pro and loves nothing more than putting on a foodie feast for friends. Our GH Kitchen Manager Linzi Pucino is our very own Italian food expert (originally hailing from the North East of Scotland!) and can be found working her way through midweek recipes that cover all bases, from haggis to ragu! Our Kitchen Editor Nadine Brown loves digging into the stories behind her favourite foods and enjoys applying her eclectic tastes to more modern, flavour-forward recipes - just don't give her too much chilli! Our Junior Food Content Produce Frankie Prichard combines a love of beautiful presentation and flavour-led, seasonal cooking in her recipe development, along with a passion for bringing people together through food. With a wealth of professional kitchen experience between them, they’re dedicated to ensuring every Good Housekeeping recipe is the best it can be, so you can trust they’ll work every single time
Advertisement - Continue Reading Below
Advertisement - Continue Reading Below
Advertisement - Continue Reading Below