Preheat your oven to 400 degrees F.
Chop your cauliflower into bite-sized florets. Feel free to include the stems
In a large bowl, mix your miso paste, tamari, avocado oil, and water together, stirring out clumbs clumps with a fork or small whisk.
Add the cauliflower to the bowl with the miso mixture, tossing to ensure everything's evenly coated
Spread the cauliflower on a parchment paper-lined baking sheet (I definitely recommend using parchment paper- this recipe can stick to a pan very easily) and bake for 40 minutes to one hour, tossing every 20-30 minutes.
Remove from the oven, serve, and enjoy.