Step 1: Preheat your oven to 350°F (175°C).
Step 2: In a large mixing bowl, combine the rolled oats, kosher salt, and coconut sugar.
Step 3: In another bowl, whisk together the eggs, full-fat coconut milk, and vanilla extract (if using).
Step 4: Pour the wet mixture into the bowl with the dry ingredients and stir until just combined.
Step 5: Gently fold in the fresh mixed berries and the finely chopped Honeycrisp apple.
Step 6: Lightly grease your baking dish and pour the oatmeal mixture into the dish, spreading it evenly.
Step 7: Bake for 30-35 minutes, or until the top is golden brown and set.
Step 8: Allow to cool, slice into squares, and serve warm.
