Step 1

Mix flour and salt in a large bowl with a wooden spoon. Add eggs and mix well.

Step 2

Gradually add just enough water to make a smooth, light, and firm spaetzle dough. The amount will depend on how 'dry' your flour is.

Step 3

Let batter sit for 30 minutes. Meanwhile, bring a pot of salted water to a boil.

Step 4

Push batter through a spaetzle maker, directly into the boiling water.

Step 5

Spaetzle noodles will float to the top of the pot when they are done (will take a few minutes). Remove with slotted spoon to a colander to drain excess water.

Step 6

Preheat oven to 400°F.

Step 7

Sauté onions in butter until tender and lightly caramelized, setting some aside for garnish.

Step 8

Layer half the spätzle, half the onions, and half the cheese in a greased 9×13-inch casserole dish. Repeat with the remaining spätzle, onions, and cheese.

Step 9

Bake, uncovered, for 15 to 20 minutes, or until the top is bubbly and lightly browned.

Step 10

Garnish with reserved caramelized onion slices and herbs.