Preheat oven to 250°F Cover rectangular baking shee with parchment paper. Mix oats, almonds, cashews, seeds, and spices together in a large mixing bowl.
Heat the butter and honey together in a small saucepan over low heat. Once butter is melted, add the vanilla.
Pour the liquid over the dry ingredients and stir together until evenly coated. Spread mixture onto prepared pan in one layer.
Bake for 75 minutes. The granola will become crisp as it cools.
Break into small chunks by pounding in a zip lock bag. Store in airtight container.
To make granola bars: Combine 1 C granola, 1/2 C pitted dates, and 1 tbsp water into a food processor and puree until mixture states to stick together. (Add a little more water if necessary) Mash this mixture down on a cutting board or sheet of wax paper to form into one even rectangle shape. Slice into six even rectangles. Store in the freezer or fridge.