1-First Step: Get the pan and oven ready Start by preheating your oven according to the cake mix package instructions. Grease a 9×13-inch baking dish well so the cake releases easily later. If you prefer, a metal or glass pan both work nicely, so use whichever you have on hand. Gather all your ingredients before mixing. Since the recipe moves quickly, having everything measured first makes the process smoother and less stressful.

2-Second Step: Mix the cake batter In a large bowl, add the strawberry cake mix, 1 1/3 cups guava nectar or guava juice, 3 large eggs, and 1/3 cup melted coconut oil. Stir until the batter looks smooth and well blended. The mix should be thick but pourable, with no dry pockets left behind. If you are substituting canola oil or vegetable oil, use the same amount. Keep the oil melted but not hot, since very warm oil can affect the batter texture.

3-Third Step: Bake the cake layer Pour the batter into the greased 9×13-inch baking dish and spread it evenly. Bake according to the package instructions for your cake mix. Since ovens can vary, start checking for doneness near the end of the bake time. Use a toothpick in the center to test the cake. If it comes out clean or with just a few crumbs, the cake is ready. This simple check helps prevent an underbaked center or a dry edge.

4-Fourth Step: Cool the cake completely Let the cake cool all the way before adding anything on top. This matters because the cream cheese layer can melt if the cake is still warm. Set the pan on a wire rack if you have one, and give it plenty of time to cool fully. If you are making the cake on a hot day, pop it into the fridge for a short time after it reaches room temperature. A fully cooled base gives you cleaner layers and a better final texture.

5-Fifth Step: Make the cream cheese layer In another bowl, beat the softened cream cheese until fluffy. Add the sugar and vanilla, then mix again until smooth. Fold in the thawed whipped topping gently so the filling stays light. Room temperature cream cheese blends more easily and gives you a smoother frosting. If the cream cheese is too cold, small lumps can remain and make the layer harder to spread.

6-Sixth Step: Make the guava gel topping In a saucepan, combine 2 cups guava nectar or guava juice with 1/2 cup sugar. Bring it to a boil over medium heat. While that heats, mix 1/4 cup cornstarch with 3 tablespoons water to form a slurry. Stir the slurry into the hot guava mixture and cook for 1 minute, or until thickened. If the topping seems too loose, keep it boiling for an extra 1 to 2 minutes while stirring. Then remove it from the heat and let it cool completely. The guava topping should look glossy and slightly thick, almost like a soft gel, before you spread it over the cake.

7-Seventh Step: Assemble the layers Spread the cream cheese mixture evenly over the cooled cake. Work slowly so you do not tear the cake surface. Next, spoon the cooled guava gel over the cream layer and gently spread it into an even finish. The cake may look a little soft at this stage, but the fridge will help the layers set. Chill it until firm, ideally overnight for the best texture and cleanest slices.

8-Final Step: Chill, slice, and serve Refrigerate the assembled cake until set. Before serving, slice it into 12 portions. If you want a pretty finish, garnish with fresh guava slices or a sprinkle of shredded coconut. This dessert is especially good when cold, so do not rush the chilling time. The flavors settle together, and the creamy, fruity layers taste even better after resting.