Preheat Oven and Prepare Baking Sheet: Preheat your oven to 350°F (175°C). Line a baking sheet with parchment paper or a silicone mat to prevent sticking.
Mix Dry Ingredients: In a large bowl, combine the rolled oats, chopped nuts, seeds, and protein powder. Stir until well mixed.
Add Wet Ingredients: In a separate bowl, mix together honey (or maple syrup), coconut oil (or nut butter), and vanilla extract. Pour this over the dry ingredients and stir until everything is evenly coated.
Bake: Spread the mixture evenly onto the prepared baking sheet. Bake for 20-25 minutes, stirring halfway through, until the granola is golden and crisp.
Cool and Store: Let the granola cool completely on the baking sheet. Once cooled, transfer it to an airtight container. Store for up to 2 weeks.