Preheat oven to 350°F. In a medium sized bowl, combine dry ingredients (oats, baking powder, cinnamon, and salt. Stir to combine.
Mash 1 ½ of the bananas. Add to dry ingredients and use a fork to incorporate it the best you can.
In another bowl, combine 2 eggs, lightly beaten, maple syrup, vanilla extract and milk. I used whole milk but you can use whatever you have on hand. Whisk together and add to your dry ingredients.
Add the wet ingredients to the dry ingredients and mix using a spoon or spatula. Fold in one cup of the sliced strawberries into the batter taking care to be gentle (no strawberry smushing here, we want these intact!).
Grease a 9x9 baking pan. Pour in the oatmeal mixture in and spread evenly. Slice the remaining banana half and top the oatmeal. Add the remaining half cup of sliced strawberries.
Bake for 35-40 minutes until the center is set. Allow to cool for 15-20 minutes before slicing and serving.
Refrigerate in an airtight container up to 4 days. Reheat in the microwave for about 45 seconds.