Heat a large skillet over medium-low heat. Add brown sugar, oil, liquid sweetener, salt, and optional flavor extract and/or spices. Stir with a spatula until melted and mostly combined.
Add oats and nuts to the pan, stirring to coat with the oil mixture. Stir frequently 7-10 minutes, or until oats and nuts are toasted and golden brown.
Remove from heat, and spread in a single layer on a baking sheet or sheet of parchment paper to cool. Granola will crisp as it cools.
Add optional dried fruit and/or chocolate chips. Once cool, store in an airtight container. Enjoy!