• Preheat your oven to 350 degrees.
• Lightly grease or line a 9 x 13 baking dish.
• In a medium mixing bowl combine your cake mix, water, oil and eggs and stir until combined.
  15.25 ounces white cake mix, 1 cup water, 1/2 cup vegetable oil, 3 eggs
• Add green food coloring until you get your desired green shade.
• Pour the cake batter into the prepared baking dish.
• Bake the cake for 30-35 minutes until a toothpick inserted comes out clean.
• Set the cake aside to cool.
• Using the handle of a wooden spoon poke holes all into the cooled cake.
• In a medium-sized. mixing bowl combine the instant pudding and milk and whisk until smooth.
  3.4 ounces instant white chocolate pudding mix, 2 cups milk
• Add red food coloring until you get the desired red color.
• Carefully spoon the pudding into the holes of the cake.

Make the Buttercream

• In the bowl of an electric mixer, whip the softened butter.
  1 cup butter
• Add confectioners sugar to the butter and continue to beat until creamy and fluffy.
  4 cups confectioners sugar
• Add green food coloring until the desired Grinch Green color.
• Frost the cake with the buttercream.
• Set the cake in the fridge to chill for 2 hours.
• Decorate with green sprinkles and heart sprinkles.
  heart sprinkles, green sprinkles