In a stand mixer bowl, combine 2 cups all-purpose flour, ½ tsp salt, and ⅛ tsp nutmeg.
Using the paddle attachment, add the 3 large eggs into the flour and mix to combine on low speed until incorporated.
Gradually pour in ½ cup water while mixing on medium-low speed. Continue mixing for 2–3 minutes, or until the batter is smooth, elastic, and slightly glossy.
Cover the bowl with cling wrap and let it rest in the fridge for about 20-25 minutes.
Fill a large pot about ¾ full with water and bring it to a boil. Add about 1 tbsp salt (for boiling water) to the water.
Place a spaetzle maker over the pot, add about ⅓ of the batter, and scrape it through the holes.
Allow the spaetzle to cook until they float to the top of the water, then continue cooking for an additional 2-3 minutes.
Using a slotted spoon, transfer the cooked spaetzle to a serving bowl. Serve warm. Toss with melted ½ tbsp butter and 1 tbsp finely chopped fresh parsley, if desired.