Ingredients:

• 2 cups all-purpose flour
• 4 eggs
• 1/2 cup milk
• 1 teaspoon salt
• 2 cups grated Swiss cheese (such as Emmental or Gruyère)
• 1 medium onion, thinly sliced
• 4 tablespoons butter
• Freshly ground black pepper to taste
• Optional: crispy fried onions (for garnish)

Instructions:

1. In a large mixing bowl, combine the flour, eggs, milk, and salt. Stir until you have a smooth batter. Let the batter rest for about 15 minutes.
2. Fill a large pot with water and bring it to a boil. Add a pinch of salt to the boiling water.
3. While the water is heating, prepare a colander or spaetzle maker. If using a colander, place it over the pot of boiling water.
4. Pour a portion of the batter onto the colander or spaetzle maker and use a spoon or spatula to press the batter through the holes, allowing it to drop into the boiling water. Repeat until all the batter is used.
5. Let the spaetzle cook in the boiling water for about 2-3 minutes, or until they float to the surface. Then, remove them with a slotted spoon or skimmer and transfer them to a colander to drain excess water. Repeat until all the spaetzle is cooked.
6. In a large skillet, melt the butter over medium heat. Add the sliced onions and cook them until they become golden and caramelized.
7. Add the cooked spaetzle to the skillet with the caramelized onions and toss gently to combine.
8. Sprinkle the grated Swiss cheese over the spaetzle and onions. Stir until the cheese melts and coats the spaetzle evenly.
9. Season with freshly ground black pepper to taste.
10. Optional: If desired, garnish the Käsknöpfle with crispy fried onions for extra flavor and texture.
11. Serve the Käsknöpfle hot as a main course or as a side dish. It pairs well with a green salad or sautéed vegetables.

Enjoy this delicious and comforting dish inspired by the flavors of Liechtenstein!