Step 1: Gather supplies
- A dog whose birthday it is, or a human who likes dog food
- A dish the size of the desired cake
- A banana
- Some kibble
- Dry oats
- Food colouring
- Wet dog food
- Various kitchen tools
Step 2: Make dog-flour
Here I used a magic bullet. But, any blender will work. If you don't have a blender, try a mortar and pestle, or use something heavy to smash them into powder. Get them as fine as you can - we are trying to mimic wheat flour.
Step 3: Add the wet ingredients
Add the wet dog food. Use about as much by volume as your dog-food flour.
Step 4: Balance the texture
In the end, your batter should be about the consistency of play-dough. It should be firm, and hold its shape without assistance.