Preheat the oven to 325 degrees F. Line a baking sheet with parchment paper. Set that aside.
In a liquid measuring cup, add the maple syrup, sourdough discard, vanilla, and oil. Mix that until it is fully combined.
Add the oats, nuts, seeds, cinnamon, and salt to a large mixing bowl. Pour the wet ingredients over the oats. Mix well until all the oats are fully coated.
Spread the oats over the prepared baking sheet. Make sure to spread the oats into a thin, even layer.
Bake for 40-45 minutes until the oats are golden brown. Remove the granola from the baking sheet and place them in a bowl. Mix in any dried fruit you are adding. Mix well and enjoy!
