Line an 8x8 baking pan with parchment paper. Set aside.
In a large mixing bowl, stir together the sunflower seed butter, maple syrup, brown sugar, and vanilla extract.
Add the oats and the mix-ins you are choosing to add. The mix might seem super thick, but keep mixing!
Transfer mixture to your baking pan and using a spoon, press firmly into the pan. You want an even surface.
Let chill for one hour minimun° and overnight before slicing and eating.
You can toast your oats beforehand, if you wish to add a depth of flavor to your granola bars. Place oats on a lined baking sheet and roast for 10 minutes at 300F. Remove from the oven and let chill before using in this recipe.