Beat cream cheese and half-and-half together until stiff and smooth.
With the back of a spoon or a small knife, line the tart shell with the cream cheese mixture.
Combine sugar replacement and strawberries in a bowl.
Toss to mix.
Divide the strawberries evenly among the 10 tart shells.
Top each tart with 1 tsp (15 mL) of nondairy whipped topping.