Spinach and Artichoke Dip Stuffed Sweet Potatoes

Name: Spinach and Artichoke Dip Stuffed Sweet Potatoes
Ingredients: 3 sweet potatoes, scrubbed and dried; 1 tablespoon olive oil; 2 cloves garlic, minced; 10 cups baby spinach; 1 cup sour cream, plus extra for garnish; 8 ounces cream cheese, at room temperature; 1 cup marinated jarred artichokes, drained and chopped; 1 1/4 cups grated Parmesan; Kosher salt and freshly ground black pepper; 1 cup seasoned panko breadcrumbs; 4 tablespoons unsalted butter, melted; 2 tablespoon minced fresh chives, for garnish