In a large mixing bowl combine the oats, crushed pretzel pieces, sunflower seeds and puffed rice.
In a microwaveable jug, microwave the brown sugar, syrup and coconut oil for one minute
Whisk to make sure the sugar has melted, then pour over the dry ingredients
Stir thoroughly to ensure that everything is coated thoroughly.
Pour into your prepared brownie dish and press down firmly.
Chill for at least half an hour.
In a microwaveable dish, break up the Crunchy Caramel M&Ms bar, and microwave in 10 second increments until melted.
Pour over the chilled granola bars and return to the fridge.
Once the chocolate has set, you can cut into bars and serve!