Preheat your oven to 325°F and line a small 4-inch springform pan or oven-safe ramekin with parchment paper.
Mix the almond flour with a teaspoon of water and a pinch of monk fruit sweetener to form a crumbly dough, then press it firmly into the bottom of the prepared pan.
In a medium mixing bowl, whisk together the Greek yogurt, vanilla protein powder, egg white, vanilla extract, and remaining monk fruit sweetener until the batter is completely smooth and lump-free.
Pour the yogurt mixture over the almond crust and smooth the top with a spatula.
Bake for 25 to 30 minutes until the edges are set and slightly golden, but the center still has a very slight jiggle.
While the cheesecake bakes, place the mixed berries in a small saucepan over medium heat and simmer for 5-8 minutes until they break down into a thick, jammy sauce.
Remove the cheesecake from the oven and let it cool at room temperature before transferring to the refrigerator to chill for at least 2 hours.
Once chilled, release the cheesecake from the pan and top with the cold berry compote before serving.