In a large bowl, combine oats with the nuts and seeds and a pinch of salt.
In a saucepan, melt the butter, maple syrup, and nut butter, stirring frequently until combined
Add in the vanilla extract, and a pinch of salt.
Once melted, add the wet ingredients to the dry ingredients, ensuring all the oats are well-coated.
Spread the oat mixture evenly onto a large baking sheet (you can use parchment paper if you desire, but I find that the paper gets in the way when I stir, so I go without)
Cook time: you can cook these for about 30-45 minutes at 300°F, but I always burn my granola if I go much above 200°F. That's because I don't stick around to stir it and I sometimes forget it's in there. It burns quickly, so if you want the long and slow method, try your oven around 170°F and bake/dehydrate for several hours until you get a crunchy granola. The benefits of this is that you can walk away and you don't have to worry about burning the granola. However, it takes MUCH longer. Your call, but want to throw out some options.
Allow it to cool completely before breaking it into clusters.