Cook maple bacon in skillet over low heat until crisp. Remove from pan and drain on paper towels. Butter one side of each slice of bread. Cut pear into 1/4 inch slices. Slice Brie. Heat a large skillet over medium heat add one slice of bread, butter-side-down into the pan. Top with sliced Brie, sliced pears, and bacon. Place the second slice of bread on top, butter-side-up. Heat until the cheese melts, then flip the sandwich over and cook on the second side until the bread is golden brown. Serve piping hot.