Process the frozen bananas and cinnamon in a food processor until smooth. Put in a bowl and put it in the freezer to keep it cold.

Place a graham cracker in the bottom of a jar while you melt the dark chocolate chips with a splash of almond milk for about 10 seconds. Stir the melted chocolate and layer it on top of the cracker.

Toast the marshmallows and layer them in the jar/glass.

Take the nice cream out of the freezer and scoop it into the jar/glass.

Continue layering the rest of the ingredients in the jar/glass.

Top with more cinnamon and half of a graham cracker (optional).