Line a baking sheet with parchment paper.
Open each Medjool date and remove the pit then place the dates on the parchment and cover them with another sheet of parchment.
Using the bottom of a glass or measuring cup, firmly press each date until it's flattened.
Add a spoonful of marshmallow fluff over each date. Spread it gently, leaving a small border around the edges.
Place two Simple Mills Honey Cinnamon Sweet Thins on each date and gently press it into the marshmallow fluff so it stays in place.
Place the dark chocolate and coconut oil in a microwave-safe bowl and microwave in 20–30 second intervals, stirring between each, until completely smooth.
Drizzle or spoon the melted dark chocolate over each marshmallow-topped date.
Immediately sprinkle crushed Simple Mills Honey Cinnamon Sweet Thins over the chocolate while it's still melted.
Place the baking sheet in the fridge or freezer for 15–30 minutes, or until the chocolate has completely set.