This is a cheat’s version of the more traditional Vanilla Slice.
My hubby calls these ‘Snot Blocks’ – not exactly appetising… but I’ve received a few versions from you lovely people – this is the easiest!
Method
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Preheat oven to 220 degrees.
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Line two baking trays with baking paper.
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Place one sheet of pastry on each baking tray, prick with a fork. Bake puff pastry sheets for 20 minutes or until golden and puffed.
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Cover the pastry with a tea towel and press out the puff very gently and set aside to cool.
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Place the vanilla mix and the 700ml of cold milk in a metal bowl and beat with electric mixers for one minute (as per directions on the pack).
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Line a square high-sided tin with baking paper so it overhangs (so it's easy to get the slice out).
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Place the pastry on the bottom so it fits firmly (you may have to gently trim).
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Pour over the vanilla mix - and refrigerate until set. When set - place the second sheet of pastry on top.
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Mix together the icing sugar and a little milk to make a icing and ice the top. Again refrigerate until set.
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Cut and serve.
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Vanilla Slice should be kept in the fridge in an air tight container (or covered in plastic wrap) for up to two days. It is not suitable for freezing.