Southern-Style Sushi

INGREDIENTS

• 1 1/4 cups cooked long-grain rice, at room temperature
• 2 tablespoons crumbled gorgonzola
• Kosher salt and freshly ground pepper
• 6 ounces leftover grilled flank steak, cut into 12 1/2-inch-wide slices
• 2 tablespoons leftover barbecue butter, softened
• 1/4 cup leftover gorgonzola cream sauce, plus more for dipping
• 4 leftover stalks grilled asparagus, cut into thirds