Combine eggs, water, oil, and vanilla into a large mixing bowl and whisk until combined.
Add the pancake mix and whisk until everything is incorporated well.
Pour into a greased donut pan (silicone donut pan works well).
Bake in preheated even for 11-13 minutes.
Allow to cool before removing from pan.
We like the silicone donut pan that fits 12 donuts per pan...note that the size of donut is smaller than usual. If you are using a donut pan with 6 larger donuts, increase your baking time accordingly.