Sweet potato gnocchi with mint-pine nut pesto

Pine nuts	½ cup
Mint leaves, chopped	¼ cup
Lemon zest, finely grated	1 teaspoon
Lemon juice	2 tablespoons
Oil, extra-virgin olive	¼ cup + 2 tablespoons
Salt, gray sea
Sweet potatoes, peeled, sliced ½-inch thick	1 ¾ pounds
Flour, gluten-free	1 cup
Cornstarch	5 tablespoons
Thyme leaves	Garnish

1. Preheat the oven to 425°F. 
2. Spread the pine nuts on a rimmed baking sheet and toast until golden brown, about 3 minutes. 
3. Transfer the nuts to a work surface, and let cool, then chop; transfer to a small bowl. Stir in the mint, zest, juice, and ¼-cup oil; season with salt. 
4. On a large rimmed baking sheet, spread the potatoes in a single layer. 
5. Bake until tender, about 20 minutes. 
6. Transfer to a food processor, and let cool, then pulse until smooth. 
7. Scrape the pureed potatoes into a large bowl, and stir in the flour, cornstarch, and 1-teaspoon salt. 
8. Lightly dust a rimmed baking sheet with flour. 
9. On a lightly floured work surface, cut the dough into eight pieces, and roll each piece in a ½-inch-thick rope, about 15 inches long. 
10. Using a knife, cut the ropes into 1-inch pieces. 
11. Roll each piece against the tines of a fork to make ridges, and transfer to the floured baking sheet. 
12. In a large pot of salted boiling water, cook the gnocchi until they rise to the surface, then cook 1 minute longer. 
13. Drain well and transfer to a serving bowl. 
14. Toss with 2-tablespoons oil, then spoon the pesto on top. 
15. Sprinkle with thyme leaves and more salt; serve. 

Recipe from Food&Wine Magazine, August 2017.