Melt butter on stovetop pot over medium heat in a small sauce pan.
In a separate medium sized bowl, combine the honey, maple syrup, and a pinch of kosher salt.
Add melted butter to the the honey, maple syrup and salt mixture, stirring to combine.
Pour oats over the butter and syrup mixture and mix thoroughly to coat. Spread coated oats evenly on a greased baking sheet.
Bake for 40-60 min. Check for doneness and stir every 15-20 minutes until desired consistency is achieved. (The sweet spot in my oven is typically around the 40 - 50 min. mark).
Remove from the oven and allow to cool. Stir oats after about 3 - 5 min. to release from the pan as they cool. (If you skip this, they tend to stick).
Stir in the raisins, and adjust salt if needed.
Notes
This will be good for about a week stored in a mason jar (if you are lucky enough for this recipe to last that long).