Grate the Apples: Peel 4 medium apples and grate them using a box grater or food processor. You want fine pieces that will cook down smoothly.

Cook the Filling: In a skillet, combine the grated apples and 200 g of sugar. Cook the mixture over medium heat for about 25 minutes, stirring occasionally. The goal is to allow the liquid from the apples to evaporate, leaving a thicker, sweeter apple filling.

Add Cinnamon: After the filling has thickened, stir in 1 teaspoon of cinnamon for a warm, fragrant aroma. Once well combined, remove the skillet from heat and allow the filling to cool completely before using it in the rolls.

Mix the Wet Ingredients: In a large mixing bowl, combine 125 g of softened butter, 125 ml of vegetable oil, 125 ml of kefir, 75 g of powdered sugar, 10 g of vanilla sugar, 1 teaspoon of turmeric, 1 tablespoon of cornstarch, and 1 large egg. Mix thoroughly using a whisk or electric mixer until smooth.

Add the Flour: Gradually add the 630 g of all-purpose flour to the wet mixture, stirring continuously until the dough comes together. The dough should be soft and pliable but not sticky. You may need to adjust the flour amount slightly depending on the moisture in the dough.

Knead the Dough: Turn the dough onto a lightly floured surface and knead it for about 3-5 minutes until smooth. Cover the dough with a cloth or plastic wrap and let it rest for 10 minutes to allow it to relax and become easier to work with.

Divide the Dough: Divide the dough into small balls, about 30 g each. You should get approximately 40 dough balls.

Roll Out the Dough: Using a rolling pin, roll each dough ball into a thin oval or rectangular shape, about the size of your palm. This creates a flat surface for the apple filling.

Add the Filling: Spoon a small amount of the cooled apple and cinnamon filling onto the center of each rolled-out piece of dough. Spread it evenly, making sure not to overfill.

Roll the Dough: Starting from one end, roll the dough into a tube-like shape, sealing the edges as you go. This will create a small, filled roll.

Preheat the Oven: Preheat your oven to 180°C (350°F).

Arrange the Rolls: Place the rolled tubes onto a baking sheet lined with parchment paper, leaving a little space between each one to allow for expansion during baking.

Bake: Bake the rolls in the preheated oven for about 30 minutes, or until they are golden brown on the outside.

Cool the Rolls: Remove the rolls from the oven and allow them to cool slightly on the baking sheet.

Dust with Powdered Sugar: Once cooled, dust the rolls with extra powdered sugar for a sweet finish.

Serve Warm: These apple cinnamon rolls are best enjoyed warm, fresh out of the oven, with a cup of tea or coffee.