Start by lining an 8-inch square pan with parchment paper, ensuring smooth adherence to avoid sticking.

In a blender, combine the chopped strawberries and unsweetened applesauce, blending until smooth.

Combine the strawberry-applesauce puree with the unflavored gelatin powder in a heat-proof bowl, whisking until integrated.

Using a double boiler, gently heat the mixture, stirring for about 5 minutes until the gelatin dissolves.

Remove from heat and let the gelatin mixture cool to room temperature, stirring gently for about 10 minutes.

Transfer the cooled mixture to a stand mixer and beat on high for about 15 minutes until fluffy.

Pour the mixture into the prepared pan and smooth the surface with a spatula.

Cover with plastic wrap and refrigerate for at least 1 hour until set.