Preheat the oven to 325℉. Line a 12-count muffin tin with parchment paper muffin liners or grease with non-stick cooking spray.
Combine the rolled oats and chopped nuts in a mixing bowl. In another bowl, whisk together the maple syrup, brown sugar, vanilla, and olive oil. Add to the oat/nut mixture and stir until fully coated.
Scoop into prepared muffin tin, distributing evenly between all 12 cups. Pack down slightly with a spoon into the cups to help them stay together. Bake in the preheated oven for 30-35 minutes or until golden brown. Let cool down for 10 minutes before removing from the pan to finish cooling on a wire rack to prevent them from sweating in the pan and allow them to crisp up.
Store in an airtight container and serve with yogurt or plain like a granola bar. Enjoy!