Potato Gnocchi with Ramps

Name: Potato Gnocchi with Ramps
Ingredients: 2 large idaho potatoes; Salt and freshly ground pepper; Pinch of nutmeg; 1 large egg; 1 cup all-purpose flour, as needed; ½ pound ramps; 4 ounces (1 stick) unsalted butter; 1 medium vidalia onion, chopped; 2 garlic cloves, thinly sliced; 1 cup chicken or vegetable stock; 2 ounces speck, diced (about ¼ cup); 1 tablespoon fennel pollen or finely ground fennel seeds; 3 teaspoons flat-leaf parsley, chopped; ½ cup extra-virgin olive oil; ½ cup (4 ounces) grated parmigiano-reggiano cheese, plus extra for serving