Preheat oven to 350 degrees and lightly oil a 7 x 11 baking dish. You could also use a 9 X 13 dish just reduce baking time a few minutes.
In a small bowl combine chia seeds and milk. Set aside for 3-4 minutes to thicken a bit.
In a large bowl combine oats, baking powder, cinnamon, salt, and coconut sugar.
Add coconut oil and vanilla to milk and stir to combine.
Pour wet ingredients over dry and combine.
Add bananas and strawberries and fold in to combine.
Transfer oat mixture to prepared baking dish and bake for 30 - 40 minutes.