Preheat the oven to 340°F (170°C). Lightly grease an 8-inch (20 cm) springform pan and line the bottom and sides with parchment paper, making sure the sides extend about 4 inches (10 cm) in height.
Separate the egg whites from the yolks.
Transfer the cottage cheese into a food processor.
Blend until smooth.
In a bowl, whisk the egg yolks with the honey until well combined.
Add the vanilla extract, lemon zest and lemon juice, and mix until smooth.
Add the cottage cheese and mix until fully incorporated and creamy.
Add the flour.
Gently fold it in until just combined.
In a separate bowl, add a pinch of salt to the egg whites and beat until soft peaks form.
Gently fold the whipped egg whites into the cottage cheese mixture in two to three additions.
Be careful not to deflate the batter.
Pour the batter into the prepared pan and smooth the top.
Bake for 40–45 minutes, or until golden and a toothpick inserted into the center comes out clean.
Allow the cake to cool completely.
Before serving, carefully invert the cake onto a serving platter.
Dust with no-refined-sugar alternative for powdered sugar and decorate with lemon slices and fresh berries.