Preheat your oven to 350°F (175°C) to ensure even baking.
Line a baking sheet with parchment paper to prevent sticking.
In a large mixing bowl, combine the rolled oats and flour, mixing them well.
In a separate bowl, whisk together the maple syrup, peanut butter, oil, and vanilla extract until smooth.
Pour the wet mixture into the dry ingredients and mix until the oats are well-coated.
Transfer the granola mixture onto the prepared baking sheet and spread it evenly.
Bake for about 20-25 minutes, stirring halfway to promote even browning.
Once baked, remove from the oven and let it cool completely on the baking sheet.
