Preheat oven to 350 degrees F. Spray a ceramic or glass 9x13 inch baking dish with cooking spray.
Spread oats and quinoa onto a cookie sheet and toast in preheated oven for 8 minutes (watch to make sure they don't overbrown). Place mixture in a large bowl and add coconut, nuts, and dried cranberries.
In a medium saucepan, combine salt, peanut butter, honey, oil, and brown sugar. Bring to a boil over medium heat, then immediately remove from heat and pour over the oat mixture. Stir together until dry ingredients are evenly coated.
Pour into prepared baking dish, pressing the mixture down into the pan. Bake for 20 minutes.
Cool for up to 2 hours, then cut and serve.