1-First, preheat your oven to 350 degrees Fahrenheit and grease an 8×8 baking dish to prevent sticking. In one bowl, mix the 2 cups rolled oats, 1 cup unsweetened coconut flakes, 1/4 cup light brown sugar, 1/2 teaspoon salt, 1 teaspoon baking powder, and 1 teaspoon ground cinnamon. In another bowl, whisk together 2 cups milk or almond milk, 1 large egg, 3 tablespoons melted and cooled coconut oil, and 1 teaspoon vanilla extract.

2-Next, spread two-thirds of the 1 1/2 cups blueberries evenly on the bottom of the dish, pour the oat mixture over the berries, then pour the milk mixture over the oats. Gently shake the dish to distribute the milk evenly and sprinkle the remaining blueberries on top. Bake for 40 minutes until the top is golden and the oatmeal is set, then let it cool for five minutes before serving.