Preheat the Blackstone pizza oven to its lowest setting (about 325°F).
In a medium bowl, combine all oat bar ingredients and mix until fully incorporated.
Grease a small baking pan with coconut oil, then pour in the oat mixture and spread evenly.
Bake for 20–25 minutes, until set and lightly golden. If the top browns too quickly, turn off the oven and allow residual heat to finish cooking, or loosely cover with foil near the end.
Remove from the oven and let cool for 2–3 minutes.
In a small bowl, whisk together all glaze ingredients until smooth. Drizzle over the warm bars.
