Shepherds Stew with Dumplings

Name: Shepherd's Stew with Dumplings
Ingredients: 4 tablespoons unsalted butter; 1 pound ground lamb or beef; Kosher salt and freshly ground black pepper; 2 medium carrots, cut into thin coins; 1 medium onion, diced; 4 sprigs fresh thyme; 8 ounces white mushrooms, quartered; 1/4 cup all-purpose flour; 1/2 cup white wine; 4 cups chicken broth; One 17.5-ounce package refrigerated potato gnocchi; 1/2 cup loosely packed fresh mint leaves, chopped