Preheat the oven to 300° F. Line a baking sheet with parchment paper or a silicone baking mat.
In a large bowl, combine the oats, almonds, cocoa powder, and cinnamon. Stir to combine.
In a small bowl, combine the coconut oil, maple syrup, and vanilla extract and stir.
Pour the mixture over the dry ingredients and stir to combine.
Pour the granola onto the prepared baking sheet and spread into an even layer.
Bake for 45 minutes, stirring after 20 minutes to keep the granola from clumping too much. Take out of the oven and let cool. The cold air will help the granola to crisp up and become crunchy.
Once completely cooled, sprinkle the chocolate chips over the granola and gently toss to combine.
Place the granola in an airtight jar or bag and store for 2 weeks.