Toast oats and nuts in an oven at 200°C for about 10 minutes.
In a pan, combine honey, butter and brown sugar, salt and vanilla extract at medium heat until butter has melted.
Combine the toasted oats and nuts with the honey-butter mix.
Fold in the California Raisins and dark chocolate chips.
Line a rectangle pan with aluminum foil.
Pour in the oat mix and flatten the mixture using a spatula or spoon.
Place the pan into a chiller and allow it to set.
Cut into protein bar sizes and serve.