Mix flour, basil and onion powder in a large bowl. Season with the salt and pepper, make a well in the center of the dry ingredients. Whisk eggs and 1 ¾ cup of water in another bowl. Pour wet into the dry well and stir until combined. Dough will be thick.
Bring the 4 cups of water and salt to a boil in a wide pot. Put your dough into a spaetzle maker and press it into the water. Cook until tender. Remove with a slotted spoon to a large bowl.