Mix well the butter and sweetener until pale and fluffy.

Add the spices and essence, mix again.

Add the eggs, one at a time, mixing between each one.

Add the almond meal/flour and mix until well combined.

Stir through the nuts and optional extras now.

Line a 8 inch/20cm round baking tin with baking parchment/paper and butter the sides well.

Spoon into the prepared tin and bake at 180C/350F for 20 minutes, or until cooked (ovens vary).