1 cup (250ml) coarsely grated old white cheddar cheese
Preheat a panini press or set a cast iron pan over medium heat.
Brush olive oil on one side of each naan bread and arrange oiled side down on work surface. Spread mango chutney on one naan; scatter mint on top, followed by a layer of cheese. Cover with remaining naan bread, oiled side up. Cut sandwich in half crosswise.
Transfer sandwiches to panini press or pan and cook until cheese is melted and both sides of naan are golden brown, about 5 minutes. If using a cast iron pan, cook, flipping once, about 3-4 minutes per side.