Step 1: Prepare the Gelatin Mixture:
In a heatproof bowl, dissolve the gelatin in 1 cup of boiling water. Stir until the gelatin is completely dissolved. Add 1/2 cup of cold water to the gelatin mixture and stir to combine. Set aside to cool slightly. This cooling is crucial to prevent the gelatin from cooking the eggs when added to the batter.
Step 2: Combine Wet and Dry Ingredients:
In a large mixing bowl, combine the cake mix, vegetable oil, and eggs. Use an electric mixer to blend the ingredients until a smooth batter forms. Be sure to scrape down the sides of the bowl to ensure that all ingredients are thoroughly incorporated. The batter should be consistent and free of lumps.
Step 3: Incorporate the Gelatin Mixture:
Gradually pour the slightly cooled gelatin mixture into the cake batter, mixing on low speed until just combined. Avoid overmixing, as this can result in a tough cake. The batter will become thinner and take on the color of the gelatin.
Step 4: Prepare Baking Pan:
Grease and flour a 9x13 inch baking pan. Alternatively, line the pan with parchment paper, leaving an overhang for easy removal of the baked cake. This will prevent the cake from sticking to the pan and ensure an easy and clean release.
Step 5: Bake the Cake:
Pour the batter into the prepared baking pan and spread evenly. Bake in a preheated oven at 350F (175C) for 25-30 minutes, or until a wooden skewer inserted into the center comes out clean. The cake should be golden brown on top and spring back lightly when touched.
Step 6: Cool and Serve:
Remove the cake from the oven and let it cool in the pan for 10 minutes before inverting it onto a wire rack to cool completely. Once cooled, the cake can be frosted, glazed, or simply dusted with powdered sugar. Slice and serve, enjoying the moist and flavorful treat.
For a richer flavor, substitute melted butter for the vegetable oil. If using a chocolate cake mix, try pairing it with cherry or raspberry gelatin for a delightful combination.