Place the whisk attachment of your stand mixer or hand mixer beaters in the freezer for at least 10 minutes before starting. If using a metal bowl, make sure it is cold as well.
Place the water in a small bowl and sprinkle the powdered gelatin over it. Allow the gelatin to bloom for 2-3 minutes.
Microwave the gelatin in 5-10 second bursts until fully melted. This takes less than 30 seconds in a high-powered microwave. Allow to cool for a few minutes.
In a large bowl or the bowl of your stand mixer, add the cold cream, maple syrup, powdered sugar and vanilla. Whip on high speed until soft peaks form.
With the mixer running, slowly stream in the melted gelatin. Continue to whip on high speed until stiff peaks form.
Use immediately.
Notes
You can use all maple syrup or all powdered sugar if you prefer more or less maple flavor in your final frosting.Makes about 2 cups frosting