Keep heavy whipping cream in the fridge until right before whipping. Chilling the mixing bowl and whisk for 10-15 minutes in the freezer can help the cream whip faster.
Heat the gelatin in short bursts, stirring in between, to prevent overheating. Slightly cooling the gelatin before adding it to the whipping cream is essential.
This frosting will hold up at room temperature for a couple of hours, but refrigerate if not using immediately.
This recipe makes about 5 cups of stabilized whipped cream, enough to frost about 24 cupcakes, a 13x18” sheet cake, or a 3-layer cake.
Store leftovers in the fridge for up to two days.