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1
First make the nutty crumble topping.
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2
Sift 4 oz flour into a bowl, and add 3 oz butter.
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3
Do not rub in the fat but cut it in with a pastry blender or a pair of knives used like scissors.
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4
Stir in the muscovado sugar and nuts and set aside.
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5
Sift the remaining 6 oz flour and the cinnamon into a separate bowl and reserve.
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6
Slice the rhubarb into 1-inch chunks and finely grate the zest of the orange over it.
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7
Cream the remaining 1/4 lb butter with the caster sugar until pale, creamy and light.
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8
Break up the eggs with a fork and add them to the butter mixture a little at a time, alternating with spoonfuls of the flour and cinnamon and add 2 tablespoons of orange juice.
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9
Spoon the cake mixture evenly over the base of a 9-inch spring-clip tin that has been greased, lined and greased again.
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10
Scatter the rhubarb and orange mixture evenly over the top then cover the fruit with the nutty crumble mixture.
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11
Bake at 350F (180C) (180 C) gas mark 4 for about 1 1/4 hours.
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12
Leave in a warm draught-free place to cool down slowly after baking and wait until the crumble-cake is completely cold before taking it out of the tin.
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13
Wait until the next day before eating.
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14
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