Preheat oven to 180C.

In medium bowl, make brownie mix according to the box but don't bake yet. Set bowl of brownie mix aside to make pumpkin mix.

Line square baking pan with parchment paper.

In medium bowl, whisk egg and sugar until thick like whip cream.

Add pumpkin puree and fold in.

Sift flour and spices and fold in gently.

Spoon dollops of chocolate brownie mix and pumpkin mix at random in lined pan.

Taking a chop stick or butter knife swirl the top giving a marble effect.

Bake 45-55 minutes or until top is crispy. Stick a knife in the middle to ensure no gooey middle. Cool completely and then cut into squares.