Prep the berries: Rinse and hull the strawberries.
Pat them dry so extra water doesn’t thin the mixture.
Make a quick strawberry puree: Add the strawberries and lemon juice to a blender or food processor. Blend until smooth. If you prefer fewer seeds, strain through a fine-mesh sieve.
Beat the cream cheese: In a mixing bowl, beat the softened cream cheese with a hand mixer for 30–60 seconds until smooth and fluffy.
Add the vanilla and salt.
Sweeten it: Beat in the powdered sweetener, starting with 2 tablespoons. Taste and adjust. Powdered sweetener dissolves better and keeps the texture silky.
Combine with strawberry puree: Mix the puree into the cream cheese on low speed until fully blended and pink. Scrape down the sides of the bowl so no streaks remain.
Whip the cream separately: In a clean, cold bowl, whip the heavy cream to soft-medium peaks.
Don’t overbeat; you want it cloud-like, not stiff.
Fold, don’t stir: Gently fold the whipped cream into the strawberry cream cheese mixture in two or three additions. Use a spatula and light strokes to keep the mousse airy.
Portion and chill: Spoon the mixture into 4–6 small jars or ramekins. Smooth the tops.
Chill for at least 1–2 hours to set and develop flavor.
Garnish and serve: Top with a slice of strawberry or a sprinkle of coconut or dark chocolate. Serve chilled.