Preheat your oven to 300 degrees, and have a large clean sheet pan ready to go, preferably with edges.
In a large bowl, stir together the oats, pecans, brown sugar, cinnamon, cocoa powder, and salt. In a medium bowl, whisk together the oil, maple syrup, egg white, and vanilla extract. Pour the wet ingredients into the dry, and stir until completely coated. This might take a few minutes, but take your time- you really want everything well coated.
Spread the mixture evenly in your sheet pan. Bake for 30 minutes, stirring once during baking. Cool completely in the pan, and then break up to desired size, and store in an air-tight container. Enjoy!