Cream the fat and sugar until light and fluffy. Add
the eggs, one at a time, adding a tablespoon of
flour with the second egg. Fold in the remaining
flour with the mashed bananas.
Divide the mixture
between the prepared sandwich tins. Bake in a
preheated oven,
180°C (350°F), Gas
Mark 4, for
20-25
minutes until the cakes spring back when lightly
pressed. Turn out the cakes on to a wire rack to
cool.
To make the filling, mix the ground almonds with the
icing sugar, then add the banana and lemon juice and
mix to a smooth paste.
Sandwich the cakes together
with the filling and dust with icing sugar.