In a large bowl, combine chickpea flour, tapioca starch, salt and turmeric. Then gradually pour in the gluten-free oat milk. Whisk until smooth. The batter should be thick.
Bring a large pot of salted water to a boil. Then spread some of the batter onto a small wooden cutting board in a thin layer and dip it in the hot water for just a second.
Using a knife, scrape off long, thin strips of the dough into the boiling water. Allow the Spätzle to cook for about 3 minutes. Then use a spoon to remove them from the pot and rinse them with cold water so they don't stick.