Put 1 tablespoon cold water in a small bowl and sprinkle the gelatin evenly over the top. Let it soften for 2 minutes before microwaving it for 30 seconds and whisking to dissolve the gelatin. Using a chilled bowl and beater, whisk the 2 cups of heavy cream and powdered sugar together until the cream forms stiff peaks, stopping to add gelatin mixture about halfway through.

Dollop the cream over your bars and gently spread it around. Sprinkle on toasted coconut. Chill until ready to serve to let the whipped cream set up. Use the sling to pull the bars out of the dish, slice with a sharp knife, and enjoy!