Bring a large pot of salted water to a boil.

In a large bowl, whisk together eggs, milk, parsley, salt, and pepper.

Gradually add flour, mixing until combined into a slightly runny dough.

Let the dough rest for 10 minutes.

Using a spaetzle maker, colander, or cheese grater, drop the dough into the boiling water.

Cook spaetzle for 5-6 minutes, or until tender.

Drain the spaetzle.

Melt butter in a sauté pan over high heat until browned and fragrant.

Add garlic, onion, pine nuts, and broccoli rabe to the browned butter.

Cook for about 2 minutes.

Remove from heat and toss in the cooked spaetzle and prosciutto.

Top with Parmesan cheese and lemon juice.

Season with salt and pepper to taste.

Serve immediately.