Cut the apple into small cubes.

In a bowl, mix egg, salt, sugar, cottage cheese, and vegetable oil.

Add chopped apple, lemon zest, and lemon juice. Stir well.

Gradually add flour and baking soda: first 100 g, then another 100 g, and the remaining 50 g for kneading.

Knead a soft dough and divide it into 14 portions.

Dip the top of each bun into a mixture of sugar and cinnamon.

Place the buns on a baking tray lined with parchment paper and bake at 180°C (356°F) for about 20 minutes, until golden brown.