Pre-heat oven to 250 degrees. Line a baking sheet with SILPAT.
Mix all granola ingredients together until clumpy. Spread evenly on baking sheet, being careful not to break apart the clumps too much. Bake for 40 minutes, flipping with a spatula halfway through.
Add apples, maple syrup, and cinnamon to a small pan. Bring to a boil over medium heat, then cover and lower heat to a simmer for 10-15 minutes or until apples are tender.
If using arrowroot, whisk with 1 tbsp water until dissolved, then stir into apple mixture. Bring mixture up to a boil again, stirring frequently. Remove from heat and allow to cool.
Layer yogurt, apples, and granola as desired for serving.