Preheat the oven to 250°F. Line a large rimmed baking sheet with parchment paper.
In a large bowl, stir together 3 cups rolled oats, 1 ½ cups pecan halves, 1 cup shredded or flaked coconut, 1 ½ teaspoons ground cinnamon, ½ teaspoon fine salt, and ¼ cup light brown sugar until evenly combined.
In a medium bowl, whisk together ¼ cup honey and ¼ cup melted coconut oil until smooth.
Pour the honey–coconut oil mixture over the oat mixture and stir thoroughly so all dry ingredients are evenly coated.
Spread the coated granola in an even layer on the prepared baking sheet, using a spatula to press it slightly for even toasting.
Bake at 250°F for 60–75 minutes, stirring and scraping the granola from the pan edges every 20 minutes, until it is evenly golden and crisp.
Remove the baking sheet from the oven and let the granola cool completely on the pan (do not add the dried fruit while warm).
Once completely cool, add 1 cup dried blueberries and toss gently to combine.
Store the granola at room temperature in an airtight container.