Preheat your oven to 325°F (165°C) and line a small 4-inch ramekin or springform pan with parchment paper.
In a small bowl, combine the almond flour and almond butter until a crumbly dough forms, then press it firmly into the bottom of the prepared pan.
Place the cottage cheese in a blender and process until completely smooth with no visible curds.
In a mixing bowl, whisk together the blended cottage cheese, Greek yogurt, egg whites, honey, and vanilla extract until fully combined.
Pour the cheesecake batter over the crust and bake for 25 to 30 minutes until the edges are set but the center still has a slight jiggle.
While the cheesecake bakes, simmer the frozen berries and lemon juice in a small saucepan over medium heat for 5 minutes until the liquid reduces into a thick sauce.
Remove the cheesecake from the oven and let it cool to room temperature, then refrigerate for at least 2 hours to achieve a dense texture.
Before serving, spread the berry reduction over the top, garnish with finely shaved dark chocolate, and slice into bite-sized pieces.