Combine the oats, ground cinnamon, salt, nuts, seeds, and flaxseed meal (if using) in a large bowl.

In a small bowl or large liquid measuring cup, whisk the maple syrup, honey, melted coconut oil, and vanilla extract until incorporated.

Pour the wet ingredients over the dry ingredients and stir to coat.

Transfer the oat mixture to the prepared sheet pan. Using a rubber spatula or your hands, press the mixture down into a single layer.

Bake the granola for 20 minutes. Rotate the pan and bake for another 15-20 minutes, until golden brown and fragrant. Remove the tray from the oven.

Let the granola cool for one hour before stirring in the dried cranberries and breaking it into pieces.