Line an 8-inch or 9-inch square pan with parchment paper, ensuring it overlaps the sides.

Blend chopped strawberries with unsweetened applesauce until smooth, about 1-2 minutes.

Transfer the puree to a heat-proof mixing bowl, sprinkle gelatin on top, and whisk until combined. Let mixture sit for 5 minutes.

Using a double boiler, simmer water and place your gelatin mixture bowl on top. Stir continuously for about 5 minutes until fully dissolved.

Let the mixture cool for 5 minutes, then whip the mixture on high speed for about 15 minutes until fluffy.

Pour the whipped mixture into the prepared pan and refrigerate for at least 1 hour to set.

Remove from the pan using parchment paper, slice into squares, and serve chilled, optionally with whipped cream.