Spread the peanut butter evenly over one slice of bread.
Sprinkle the chopped macadamia nuts over the peanut butter, pressing them in lightly to stick.
Top the macadamia nuts with banana rounds, fitting as many rounds as possible onto the bread.
Spread the blackberry jam over the other slice of bread.
Top the jam with cinnamon.
Sandwich the two slices together.
Meanwhile, heat a medium nonstick skillet over medium low heat.
Add the coconut oil, coating the pan evenly.
Cook the sandwich for about four minutes on one side, or until golden brown.
Flip, then cook for another three minutes, or until the second side becomes golden brown as well.
