Preheat the oven to 275 F and move the baking rack into the middle of the oven. Line a baking sheet with parchment paper.
Mix all of the ingredients in a large bowl, then evenly spread onto the baking sheet.
Bake for 45-50 minutes, stirring every 15 minutes or so. Check the granola at 35 min to make sure it isn’t burning. It may still seem a bit moist at 50 but take it out as it will dry as it cools.
If any is stuck together after it cools, break apart with your hands.