Step 1

Preheat the oven to 375ºF. Grease (I used coconut oil) or spry a 2-quart casserole dish.

Step 2

In a large bowl, stir together the oats and boiling water. Let stand for 10 minutes.

Step 3

Meanwhile, line the bottom of the baking dish with the bananas, overlapping as needed..

Step 4

Add the milk, maple syrup, vanilla, cardamom (if using( and salt to oats, stirring until blended. Gently stir in half of the berries. Spoon oats into prepared pan and top with remaining berries and walnuts, if using.

Step 5

Bake in the preheated oven for 25 to 30 minutes or until golden brown. Let cool on wire rack at least 5 minutes before serving. Serve warm.