Put the oat flakes in a bowl, mix with the melted, liquid butter and let stand for a while. Beat the egg with the sugar until creamy. Mix and add flour, baking powder and salt, then stir in the oatmeal and butter mixture.
Now place a teaspoon-sized pile on a baking sheet lined with baking paper. Warning: These biscuits are very flowing, so I don`t put more than 16 piles on a tray. With top and bottom heat, bake the biscuits on the middle rack at 200 ° C for about 10 minutes.
Tip: The amount of sugar can be reduced without any problems: The original recipe, as I received it, calls for 250 g of sugar, but I usually bake it with 170 g. Then the cookies are still sweet enough.