Preheat your oven to 325°F (165°C) and line a baking sheet with parchment paper.
In a large bowl, combine the gluten-free rolled oats, chopped almonds, chopped cashews, sunflower seeds, pumpkin seeds, ground cinnamon, and a pinch of salt. Stir to mix evenly.
Pour in the melted coconut oil, honey (or maple syrup), and vanilla extract. Stir thoroughly until all dry ingredients are evenly coated.
Transfer the mixture to the prepared baking sheet. Press firmly into an even layer to help form clusters while baking.
Bake for 20–25 minutes, stirring gently halfway through for even browning. Keep an eye on the granola to prevent burning.
Allow the granola to cool completely on the baking sheet without stirring. This helps the clusters form naturally.
Once cooled, gently mix in the dried cranberries and raisins.
Transfer the granola clusters to an airtight container. Store at room temperature for up to 2 weeks, or freeze for longer storage.