Prep: Preheat oven to 350°F (176°C). Lightly grease a 9x13 inch casserole dish.
Mash: To the prepared dish, add 3 ripe bananas and mash into a mostly smooth paste with some small lumps remaining.
Dump: Stir in 3 cups rolled oats, 2 ½ cups milk, ½ cup chocolate chips, 3 Tbsp chia seeds, 2 large eggs, 1 Tbsp instant coffee, and ¼ tsp salt. Stir well until everything is fully combined and the eggs are completely incorporated.
Bake: Bake for 25 minutes, or until liquid is fully absorbed and center is set.
Serve: Allow to cool slightly, then serve. You can either top the entire casserole dish with 2 cups vanilla yogurt and a dusting of 2 Tbsp unsweetened cocoa powder (if serving immediately), or top individual servings with each (this is better if you're not serving right away).
Notes
Store covered in the fridge for up to 4 days.Reheat individual portions in short bursts in the microwave to preserve texture. Add yogurt after reheating for best consistency.Can this be dairy free? Yup, just use dairy free yogurt. For vegan, use nut butter instead of the egg and a plant based yogurt.Is this gluten free? It is, but just be sure to use certified gluten-free rolled oats as needed.