Preheat the oven to 350°F. Lightly grease an 8x8" glass baking dish with coconut oil.
In a large mixing bowl, combine the melted butter, maple syrup, honey, and eggs. Stir vigorously until combined.
Add the remaining ingredients and stir until everything is incorporated. I recommend adding the water or milk last.
Pour the batter into the 8x8" pan. Bake for 25-30 minutes. The edges should be lightly browned and the center should be firm. Serve warm with your favorite baked oatmeal toppings!
Overnight Option: You can also cover the un-baked batter and store it in the fridge for 24 hours before baking it.
Once baked, the baked oatmeal can be stored at room temperature for 3-4 days or in the fridge for up to a week.