Banana & Blueberry Baked Oatmeal

rolled oats (use gluten free if needed)

pecans, chopped and lightly toasted

baking powder

ground cinnamon

salt

maple syrup, plus more for serving

non-dairy or low-fat milk

large egg

unsalted butter or coconut oil, melted and cooled slightly

vanilla extract

ripe bananas, sliced into ½-inch thick pieces

fresh blueberries