Preheat your oven to 350°F (175°C). Grease an 8-inch springform pan with cooking spray or line the bottom with parchment paper.
In a medium bowl, combine almond flour, cocoa powder, unsweetened applesauce, vanilla extract, and salt. Mix until well combined. Press the mixture into the bottom of the prepared springform pan to form the crust. Bake for 10 minutes, then remove from the oven and let cool.
In a large mixing bowl, beat the softened cream cheese until smooth. Add Greek yogurt, powdered erythritol, lemon juice, and vanilla extract. Mix until creamy and well combined. If you prefer a thicker cheesecake, add cornstarch and mix well.
Pour the cream cheese mixture over the cooled crust, spreading it evenly.
Arrange the sliced strawberries on top of the cheesecake mixture.
Bake for an additional 25-30 minutes, or until the cheesecake is set but still slightly jiggly in the center.
Turn off the oven and let the cheesecake cool in the oven with the door slightly ajar for about 1 hour. This helps prevent cracking.
Once cooled, refrigerate the cheesecake for at least 4 hours, or overnight for best results.
Before serving, garnish with additional fresh strawberries if desired.