Lay the bread slices out on a cutting board. Spread each slice with about a teaspoon of mango chutney, then top each with the shredded cheeses. Place two bacon strips on two of the slices of bread and then top with the cheese only bread slices. Spread the top of each sandwich with two teaspoons of butter.
Heat a medium skillet over medium heat and add 1 tablespoon of butter. Once the butter melts swirl so it coats the pan and add the sandwiches butter side up to the pan. Sprinkle the tops of each sandwich with a little sea salt, if desired. Grill the sandwich until it is golden brown, about 2 minutes. Carefully flip each sandwich and grill for another 2-3 minutes, or until the cheese is melted and the bread is dark golden brown on both sides.
Remove the sandwich to serving plates and cut in half. Serve immediately.
Recipe by Evil Shenanigans at https://evilshenanigans.com/2015/05/mango-chutney-and-bacon-grilled-cheese/