Try this delicious cake recipe:
First, whisk together the water and oil, then whisk the two types of flour and add to the water/oil mixture until smooth.
From this, roll out a flat dough and cut into rectangular cookies on the baking sheet or cut out round cookies with a glass or cup.
Bake at 150 °C until the dog biscuits are brown.
They taste even better if you use low-salt beef broth instead of water or add a little grated cheese.