In a saucepan, whisk together sugar, cornstarch, and salt.
Slowly add apple juice while whisking to avoid lumps.
Cook over medium heat, stirring constantly until thick and clear (about 5–7 minutes).
Remove from heat and let the glaze cool slightly.
Arrange hulled strawberries in pre-baked tart shells.
Spoon or brush the glaze over strawberries to coat evenly.
Chill tarts in the fridge for 10–15 minutes until set.
Serve chilled and enjoy fresh!