Step 1

Preheat the oven to 325°F with a rack in the center position. Lightly grease an 8" square pan.

Step 2

In a medium bowl, mix together the oats, cocoa, flax, baking powder, and salt until thoroughly combined.

Step 3

In a separate medium bowl, whisk together the milk, banana, maple syrup, oil, and vanilla.

Step 4

Add the wet ingredients to the dry ingredients and stir to combine. Add 1/3 cup (57g) of the chocolate chips and stir to combine.

Step 5

Transfer the mixture to the prepared pan, and spread into an even layer.

Step 6

Top the oatmeal mixture with the remaining 3 tablespoons (about 33g) chocolate chips and nuts.

Step 7

Bake the oatmeal for 35 to 40 minutes, or until set but not dried out.

Step 8

Serve the baked oatmeal warm with sliced almonds on top, and perhaps some extra milk and/or maple syrup drizzled on top, if desired.

Step 9

Store leftover baked oatmeal in the refrigerator, covered, for up to several days.