Baked Oatmeal - Steel Cut

Measure the 2 cups of steel cut oats into a container and cover with water. Place them in the fridge to soak overnight and soften a bit (I have let them soak for a day or two before and it doesn't change anything). SHORT ON TIME - you can use 2 cups old fashioned oats instead for an even swap.
Preheat the oven to 375u0b0F with a rack in the top third of the oven. Spray a 9X13 pan with cooking spray. You can also use a 8-inch square pan if you prefer.
Drain the water off the oats and let them sit in a colander for a bit to get all the water off.
Arrange the bananas in a single layer in the bottom of the prepared baking dish. Sprinkle two-thirds of the berries over the top.
In a large mixing bowl, mix together the oats, half the walnuts, baking powder, cinnamon, and salt.
Cover the fruit with the oat mixture.
In the same mixing bowl, whisk together the maple syrup, milk, egg, coconut oil, and the vanilla.
Slowly drizzle the milk mixture over the oats. Gently give the baking dish a couple thwacks on the countertop to make sure the milk moves through the oats. Scatter the remaining berries and remaining walnuts across the top.
Bake for 35 to 45 minutes, until the top is nicely golden and the oat mixture has set. Remove from the oven and let cool for a few minutes. Drizzle with maple syrup if you want it a bit sweeter before serving. Serve with vanilla or honey yogurt as a topping.