Prepare the Base. In a large mixing bowl, combine the rolled oats, nuts, seeds, and any optional add-ins. Stir to combine.
Make the Binder. In a small saucepan, heat the honey and nut butter over low heat until melted and smooth. Stir in the vanilla extract and salt.
Combine Wet and Dry Ingredients. Pour the melted honey mixture over the dry ingredients and mix until everything is well-coated and evenly distributed.
Press into Pan. Transfer the mixture to a lined baking dish or pan. Use a spatula or your hands to press the mixture firmly and evenly into the pan.
Chill and Cut. Place the pan in the refrigerator for at least 2 hours to allow the granola bars to set. Once firm, remove from the pan and cut into bars or squares.
Store and Enjoy. Store the granola bars in an airtight container or wrap them individually in plastic wrap for easy grab-and-go snacks. Enjoy at room temperature or chilled for an extra refreshing treat.