Step #1 NOTE: You will probably want to start the assembly process while your skillet heats up.
Step #2 In a small bowl, mix the softened butter & brown sugar until mixd well.
Step #3 Spread & pack down the mixture in between the slices of bread.
Step #4 Heat the skillet over med-high heat & add butter.
Step #5 Fry the sandwich until brown & the caramel has turned gooey.
Step #6 You will need to be VERY careful when flipping this sandwich, as it is not a "sticky" filling & could come apart very easily, But if you're careful & cook it long enough, the brown sugar & butter will turn into a caramel.
Step #7 Remove from the skillet & cut into fourths.