01 -
Preheat oven to 175°C. Grease a 23 x 33 cm baking pan with non-stick spray. Mix the chocolate cake batter according to package instructions.
02 -
Pour batter into prepared pan. Bake for 30–35 minutes, or until a toothpick inserted in the centre comes out clean.
03 -
While warm, use the handle of a wooden spoon to poke holes across the surface at 1.5 cm intervals. Warm the hot fudge sauce in the microwave for 45 seconds or until thinned. Pour evenly over the cake, ensuring hot fudge fills the holes.
04 -
Set cake on a cooling rack and cool completely before proceeding to the next step.
05 -
In a bowl, whisk half & half and instant chocolate pudding mix for 2 minutes until smooth and thickened. Let stand 5 minutes to fully set.
06 -
Fold in the thawed whipped topping until well combined with the pudding mixture.
07 -
Spread pudding and whipped topping mixture evenly over cooled cake.
08 -
Sprinkle finely crushed Oreo cookies evenly over the surface. Gently press gummy worms into the cookie crumbs.
09 -
Refrigerate for at least 2 hours before slicing into 18 portions to ensure clean cuts. Store covered in the refrigerator up to 4 days.