Prep an 8x8 inch square pan by lining it with parchment paper, then place it to one side and preheat your oven to 160C / 325F / Gas mark 3.
In a medium sized saucepan put in the sugar, honey and butter and melt over a medium heat until the sugar has dissolved. Once it has place the pan to one side to cool.
While your pan is cooling, in a large mixing bowl place your rolled oats and raisins.
Place your cashews in a plastic zip lock bag and give them a gentle bash with a rolling pin to break them down into small pieces. Then add these to your mixing bowl.
Add in your sunflower seeds and flaked almonds and give everything a good mixing.
Pour in the liquid ingredients from your cooled pan and stir until everything is very well combined.
Pour the mixture into your prepared pan and press it down with the back of a spoon and pop it in the oven for 30 to 35 minutes.
You want your granola bars to be golden in colour, when it is, take it out of the oven and allow it to fully cool down. About an hour, depending on how cold your kitchen is!
Take the cold granola slab and cut it into 12 equal size squares.
Kept in an airtight tin these granola bars will keep well for up to one week.