Preheat Oven – Set oven to 300°F (150°C) and line a baking sheet with parchment paper.
Mix Wet Ingredients—In a large mixing bowl, whisk together the sourdough discard, maple syrup, melted coconut oil, vanilla extract, cinnamon, and sea salt.
Add Dry Ingredients – Stir in oats, nuts, seeds, hemp hearts, and coconut flakes until well coated. If you notice any dry spots, don’t hesitate to add an extra tablespoon of discard.
Spread Evenly – Transfer the mixture onto the lined baking sheet and spread it into an even layer.
Bake – Bake for 30-40 minutes, stirring halfway through to get even baking without burning.
Cool Completely—Remove the granola mixture from the oven and let it cool completely before breaking it into clusters. Add dried fruits if desired.