Preheat oven to 375°F. Line a baking tray2 with parchment paper or a silicone mat.
Spread lentils out on the baking tray and place into the oven for 15-20 minutes until dried and starting to crisp. Then remove the lentils and reduce the oven temperature to 325°F.
Mix applesauce and vanilla extract in a large mixing bowl.
Add oats, nut/seeds, cinnamon, salt, and the dried out lentils. Mix until everything is well coated.
Spread the mixture out on the baking tray. Press down with a silicone spatula to flatten and compact the granola.
Place into the oven to bake for 40-50 minutes until dry and golden brown, stirring after 25 minutes. Turn off the oven and leave the granola in for 30 minutes to crisp up more as it cools.
Notes
1) Nuts or Seeds: I like to use a mix of untoasted pumpkin seeds and sunflower seeds. Almonds, cashews, peanuts, pecans, and coconut flakes would be great as well.2) Baking Tray Size: I developed this recipe in a small toaster oven using a quarter sheet pan. If you're using a full size oven, you can double the recipe and use a half sheet pan.