Prep the pan and oven: Preheat oven to 350°F (175°C). Lightly grease a tartlet pan or line a muffin tin with parchment liners.
Make the crust: In a bowl, whisk almond flour, sweetener, salt, and cinnamon.
Stir in melted butter, vanilla, and egg white. The mixture should look like damp sand and hold together when pressed.
Press and shape: Divide the mixture evenly among 6 cups. Press firmly across the bottom and up the sides to form shells of even thickness.
Use the bottom of a measuring cup to smooth.
Bake: Bake 10–12 minutes, until lightly golden at the edges. They’ll firm up as they cool. Set aside to cool completely before filling.
Whip the cream filling: In a bowl, beat the softened cream cheese with sweetener, vanilla, lemon zest, and salt until smooth.
In a separate bowl, whip the heavy cream to soft peaks. Fold whipped cream into the cream cheese mixture until fluffy and uniform. Adjust sweetness to taste.
Prep the strawberries: Toss sliced strawberries with lemon juice and a little sweetener if needed.
Let sit for 5–10 minutes to become slightly syrupy.
Assemble: Spoon or pipe the cream filling into cooled tart shells. Top with fanned strawberry slices. Garnish with mint if you like.
Chill briefly: For the neatest slices and best texture, chill the tartlets 20–30 minutes before serving.