Set the oven to 350°F.
Lightly toast your bread slices. They'll go in the oven later, so toast them just a bit for now.
Very thinly slice the pear. If you have a mandolin, use that, but otherwise, good knife skills can do the trick! The slices can be any shape or size, but you want them to be as thin as possible.
Mix together the butter, miso, maple syrup and cinnamon. It should form a paste.
Place a piece of parchment paper down on a baking sheet and use a brush to spread a thin layer of the miso mixture on the parchment paper. Make sure it is the miso layer is the same size as the bread you are using.
Layer the pear slices on top of the miso layer, and then place the bread on top.
Bake at 350°F for 10 minutes or until the sugars begin to caramelize.
Flip the toast over, parchment paper included. Let it sit for a few minutes before slowly and gently pulling off the parchment paper to reveal the toast.
Top with sesame seeds and eat right away :)