A delightful baked oatmeal casserole featuring a medley of berries and nuts, perfect for a wholesome breakfast or brunch.
Preheat your oven to 375°F (190°C).
Ensure your oven is fully preheated for even baking.
Grease a 10x7-inch baking dish with butter or cooking spray.
Use a non-stick spray for easier cleanup.
In a large mixing bowl, combine the oats, brown sugar, baking powder, cinnamon, salt, half of the walnuts, and half of the pecans.
Mix thoroughly to ensure even distribution of ingredients.
In another bowl, whisk together the milk, egg, melted butter, and vanilla extract.
Whisk until the mixture is smooth and well combined.
Spread the oat mixture evenly in the prepared baking dish.
Press gently to create an even layer.
Top with the remaining nuts and berries, and arrange banana slices on top.
Arrange toppings decoratively for a beautiful presentation.
Pour the liquid mixture evenly over the oats and toppings.
Pour slowly to ensure even coverage.
Bake in the preheated oven for 35-40 minutes, or until the top is golden and the mixture is set.
Check for doneness by inserting a toothpick into the center; it should come out clean.
Let cool slightly before serving. Enjoy your baked oatmeal warm.
Serve with a drizzle of maple syrup or a dollop of yogurt for added flavor.