Preheat the oven to 325 degrees Fahrenheit. Line a baking sheet with parchment paper.
In a large bowl combine oats, pecans, salt, cinnamon, nutmeg, and coconut sugar. Stir to combine.
In a small bowl add olive oil, maple syrup, and vanilla extract. Whisk until combined. Pour liquid over dry ingredients and stir with a large spoon until the oat mixture is completely coated.
Transfer mixture to prepared pan and spread into an even layer. Use a piece of parchment paper to pack down oats.
Bake for 30-40 minutes, stirring halfway through bake time and flattening and packing back down into an even layer.
Remove from oven and allow granola to cool completely on baking sheet. If using, mix together the icing ingredients. Once granola is cool, use a spoon or ziplock bag to drizzle icing back and forth on top of granola. Allow icing to set before breaking granola into chunks.
Place granola in an airtight container. Best eaten within 3-4 days.