Preheat oven to 320 convection.
Add butter to a small sauce pan over medium high heat.
Allow the butter to melt, swirling pan often.
Once melted, the butter will foam up a bit, then subside.
Watch carefully as the butter turns quickly. You should see a darker colour form under the foam.
The butter should have a nutty, toasty aroma.
Add nut butter, maple syrup and vanilla into the butter and still until well combined.
Add dry ingredients into a large bowl. Lightly stir and then add wet ingredients on top of dry.
Mix until all the dry ingredients are thoroughly coated.
Transfer to 2 baking sheets. Press the granola firmly into the baking sheets using a rubber spatula.
Place in the oven for 20 minutes. Turn pans 180 degrees and bake again for 10-15 minutes until golden brown and dry to the touch.
Allow the granola to cool completely before lifting off the pan using a wooden spatula.
Transfer to 2 mason jars and store in the pantry.