Mellow spiced, sticky tray bake. It is quite sweet and moist. Keeps very well, a few days is not a problem at all. And it would probably freeze well too. Try to bake it the day before you want to serve it, it tastes better when the flavours had some time to marry.
Treacle Spice Traybake (21 pieces)
Slightly adapted from “Mary Berry’s Baking Bible”
225 g butter, softened
175 g sugar
225 g black treacle
275 g self-raising flour
2 tsp baking powder
2 tsp speculaas spices
4 tbsp milk
Preheat the oven to 180C. Line a 30 x 23 cm baking tin with baking paper.
Measure all the ingredients into a large bowl and beat well for about 2 minutes until well blended. Turn the mixture into the prepared tin and level the top.
Bake in the preheated oven for about 35-40 minutes. Leave to cool in the tin. Cut into 21 pieces.