Bring 10 cups of water to a boil. Add steel cut oats and stir. Allow oats to thicken over high heat for 5 minutes.
When oats begin to thicken, reduce heat to medium low and allow oats to simmer for 20 minutes.
Add vanilla extract, flax, chia seeds, and banana chucks and stir. Cook for another 10 minutes, stirring frequently.
Top with strawberries, almond slices, and coconut flakes.