Step 1

Preheat the oven to 350°F. Grease an 8x8" baking dish if not non-stick.

Step 2

In a large mixing bowl, mash banana until smooth (a few small lumps remaining is ok). Whisk in milk, maple syrup, brown sugar, molasses, and vanilla extract. Add oats, spices, baking powder, and salt. Fold to combine. Pour mixture into the prepared baking dish and spread out evenly to distribute.

Step 3

To make the streusel, add walnuts and oats to a food processor. Pulse a few times until it resembles a coarse flour. Add brown sugar, flour, cinnamon, and coconut oil. Pulse a few more times until mixture resembles wet sand. Evenly sprinkle the streusel over the oats.

Step 4

Bake for 28-30 minutes until top is golden brown and oatmeal is firm and no longer jiggles. Let cool for 5 minutes before serving. Optionally drizzle over a simple powdered sugar icing or yogurt thinned with milk! Enjoy.