Rhubarb custard slice

  • 45 mins cooking
  • Makes 16 Item
  • Print


Rhubarb custard slice
  • 2 (sheets) ready-rolled puff pastry, thawed
  • 4 cup (440g) coarsely chopped fresh rhubarb
  • 1/3 cup (75g) caster (superfine) sugar
  • 1/3 cup (80ml) water
  • 1/2 cup (110g) caster (superfine) sugar, extra
  • 1/2 cup (75g) cornflour (cornstarch)
  • 1/4 cup (30g) custard powder
  • 2 1/2 cup (625ml) milk
  • 30 gram butter
  • 1 egg yolk
  • 1 teaspoon vanilla extract
  • 3/4 cup (180ml) pouring cream
  • pink food colouring
Orange icing
  • 1 1/2 cup (240g) icing (confectioners’) sugar
  • 2 tablespoon orange juice, approximately


Rhubarb custard slice
  • 1
    Preheat oven to 220°C (200°C fan-forced). Grease deep 23cm square cake pan; line base and sides with foil, extending foil 10cm over sides.
  • 2
    Place pastry sheets on separate greased oven trays. Bake about 15 minutes; cool. Flatten pastry with hand; place one pastry sheet in pan, trim to fit, if necessary.
  • 3
    Meanwhile, combine rhubarb, sugar and the water in large saucepan; cook, covered, stirring occasionally, until rhubarb mixture is pulpy. Cool.
  • 4
    Combine extra sugar, cornflour and custard powder in medium saucepan; gradually stir in milk until smooth. Add butter; stir over heat until mixture boils and thickens. Reduce heat; simmer, stirring, about 5 minutes or until custard is thick and smooth. Remove from heat; stir in egg yolk, extract, cream and rhubarb. Tint custard with pink food colouring. Spread warm custard mixture over pastry in pan. Top with remaining pastry, puffed-side down, trim to fit if necessary; press down lightly.
  • 5
    To make orange icing; sift icing sugar into small heatproof bowl; stir in enough of the juice to make a firm paste. Stir icing over small saucepan of simmering water until spreadable.
  • 6
    Spread pastry with icing; refrigerate slice 3 hours or overnight.


You need about 1 large bunch of rhubarb.

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