Making Apple Cinnamon Crunchies is easy when you follow these steps:

1. Preheat your oven to 350°F (175°C). Prepare a baking sheet by lining it with parchment paper.
2. Prepare the Apples: Wash and peel the apples. Remove the cores and chop them into small pieces.
3. Mix Dry Ingredients: In a large bowl, combine the rolled oats, flour, brown sugar, cinnamon, nutmeg, and salt. Stir well to ensure the spices are evenly distributed.
4. Add Wet Ingredients: Pour the melted butter and vanilla extract into the dry mixture. Stir until everything is well combined.
5. Incorporate Apples: Gently fold in the chopped apples and nuts (if using). Ensure the apples are well coated with the mixture.
6. Spread Mixture: Transfer the mixture onto the prepared baking sheet. Spread it evenly, pressing down slightly to form a compact layer.
7. Bake: Place the baking sheet in the preheated oven and bake for 20-25 minutes, or until the edges are golden brown and crispy.
8. Cool: Once done, remove the baking sheet from the oven and let the crunchies cool on the sheet for about 10 minutes.
9. Serve: Once cooled, cut the mixture into squares or rectangles. Serve immediately or store in an airtight container for future snacking.

These steps will guide you through making delicious Apple Cinnamon Crunchies that are sure to become a favorite!