1. Prepare the Cake:

• Preheat your oven to the temperature specified on the red velvet cake mix box (usually 325–350°F).
• Grease a 9×13-inch baking pan.
• Prepare the red velvet cake batter by following the instructions on the box, mixing in the eggs, oil, and water as required.
• Pour the batter into the greased pan and bake as directed or until a toothpick inserted into the center comes out clean.
• Allow the cake to cool for 10–15 minutes.

2. Poke the Cake:

• Use the handle of a wooden spoon to poke evenly spaced holes across the cake. The holes should be deep enough to allow the filling to seep through.

3. Prepare the Filling:

• In a large mixing bowl, whisk together the instant vanilla pudding mix and milk until the mixture thickens slightly.
• Fold in the heavy whipping cream until fluffy and well combined.
• Add green food coloring a few drops at a time, mixing until the desired vibrant green shade is achieved.

4. Fill the Cake:

• Pour the green pudding mixture over the cake, ensuring the filling covers the surface and seeps into the holes. Use a spatula to gently press the filling into the holes for even distribution.
• Cover the cake with plastic wrap and refrigerate for at least 2 hours to allow the filling to set.

5. Decorate the Cake:

• Once the cake is chilled and set, top it with red and green sprinkles for a festive finish. Add snowflake sprinkles and white chocolate curls for an extra holiday touch.

6. Serve and Enjoy:

• Slice the cake into squares and serve chilled. Each slice will reveal the stunning red velvet base and green filling—perfect for impressing your guests!