To tell if your cupcakes are fully baked the tops should no longer glisten and the cake will bounce back when you touch it. If this is not the case, allow them to bake for two more minutes and check them again. Because we are adding the room temperature guava paste prior to the cupcakes being fully baked they can act as an insulator which may require more baking time than expected. Once the cupcakes are baked remove them from the oven and allow them to cool in the pan for ten minutes. Carefully remove the cupcakes from the pan and allow to fully cool on a wire rack. Do not put them in the refrigerator to cool down quicker or the tops will become wet.