Heat oven to 200C/180C fan/gas 6.
Line a 21 or 22cm square, shallow baking tin with baking parchment.
Put the flour, ground almonds and sugar in a bowl with the butter and rub in until fine crumbs form.
Stir in the milk, cinnamon and cloves.
Tip two-thirds of the mixture into the tin and press down evenly.
Bake for about 15 minutes.
Stir the jam in a bowl to loosen a little, then spread over the base.
Crumble over the remaining mixture and bake for 10-15 mins more until the topping is golden.
Scatter with 2 tsp caster sugar, cool in the tin, then slice into squares.