Sift flour and mix with baking powder. In a bowl pour sugar, pour water and vegetable oil. Place the bowl in a water bath.Add honey, and mix until the sugar and honey completely dissolved. Soda repay lemon juice, add to honey mixture and stir - the mixture should foam and increase in volume.Gradually add flour with baking powder and knead the dough consistency as pancakes. Pour the batter into a greased and sprinkled with flour form for baking. Wash apples, core, and cut into thin slices.Lay the Apple slices on the dough. Bake gingerbread ~30-35 minutes in preheated to ~180°C oven. Ready to remove gingerbread from oven and let rest ~10 minutes.