Rainbow chard, blackberry and Wensleydale picnic traybake pie

  • 10-12
  • 2 hours 30 minutes plus cooling time
5.00

Although traditionally associated with sweet desserts, blackberries also make a great addition to savoury dishes, particularly when paired with earthy seasonal vegetables and punchy cheese. This is a colourful, flavour-packed pie that is perfect for slicing up and taking on picnics.

First published in 2025
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Ingredients

Metric

Imperial

For the filling

  • 450g of rainbow chard, stalks and leaves separated, chopped
  • rapeseed oil, for cooking
  • salt and pepper
  • 1 red onion, thinly sliced
  • 550g of waxy potatoes, peeled and sliced
  • 200g of Wensleydale cheese, crumbled
  • 150g of frozen peas

For the blackberry thyme dressing

For the pastry

For finishing

For the blackberry thyme dip

For the apple hazelnut slaw

Equipment

  • 20 × 30 cm traybake tin
  • Rolling pin

Method

1

Preheat the oven to 200°C/180°C fan/gas mark 6

2

Toss the chopped chard stalks in oil, season, and roast for 15–20 minutes

3

Fry the sliced red onion in a pan with a splash of until tender and sweet, about 15 minutes

  • 1 red onion, thinly sliced
4

Blanch the sliced potatoes in boiling water for 8 minutes until tender, then drain and cool

5

Wilt the chard leaves in boiling water for 1 minute, then refresh in cold water. Squeeze dry and chop roughly

6

For the dressing, whisk together the cider vinegar, honey, mustard and thyme leaves

7

Toss the blackberries gently in the dressing and set aside

8

Reduce the oven to 180°C/160°C fan/gas mark 4

9

Line a 20 × 30 cm traybake tin with parchment

10

Overlap two of the pastry sheets together by a few centimetres, and then roll them together, using a splash of water to help them stick if needed. Roll out the joined pastry sheets until they are the thickness of a £1 coin, and big enough to line the base and sides of the tin. Press into the tin

11

Scatter breadcrumbs across the pastry base. Layer in the roasted chard stalks, softened onions, marinated blackberries, wilted leaves, crumbled Wensleydale, potatoes and peas, seasoning well between layers

  • 2 tbsp of breadcrumbs
  • 200g of Wensleydale cheese, crumbled
  • 150g of frozen peas
12

Set aside a few tablespoons of egg for glazing, then pour the rest gently over the filling

13

Cover with the ready‑rolled pastry, trim and seal the edges. Brush with egg, scatter with poppy seeds, and score into 12 neat slices

  • 2 tbsp of poppy seeds
14

Bake for 1 hour 20 minutes until golden and crisp. Cool fully before lifting out and slicing. While the pie chills, make the remaining components

15

For the dip, mash the blackberries with the yogurt, honey, vinegar, thyme and a pinch of salt. Chill until ready to serve

16

Toss the julienned apples with lemon juice, honey, oil, hazelnuts and salt to make the slaw

17

Serve the pie with the slaw and dip on the side

First published in 2025
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