Heat a skillet over medium heat, melt 1 tablespoon of unsalted butter, and caramelize the sliced peaches by adding brown sugar and cinnamon for 3-4 minutes per side.

Slice the sourdough or ciabatta bread, spread unsalted butter generously on one side, and drizzle olive oil on the other side.

Assemble the sandwiches by layering Brie cheese and caramelized peaches on the oiled side of a bread slice. Add optional honey and basil, then top with another slice of bread with the buttered side facing out.

Grill the sandwiches in the skillet over medium heat for 3-4 minutes per side until golden brown and the Brie melts.

Let the sandwiches cool for a minute, slice in half, and serve warm.