01 -
Preheat your oven to 375°F (190°C) and grease a 2-quart (or 9x9-inch) baking dish with nonstick cooking spray.
02 -
In a bowl, use a fork to mix the brown sugar, flour, and softened butter until crumbly. Add oats and pecans, mix well, and set aside.
03 -
Whisk together flour, sugar, and milk until just blended. Stir in melted butter. Pour this mixture into the prepared baking dish.
04 -
Layer the sliced bananas on top of the filling.
05 -
Sprinkle the prepared streusel topping evenly over the bananas.
06 -
Bake for 45-50 minutes until golden brown and set.
07 -
Serve warm. For an extra treat, top with a scoop of vanilla ice cream and additional banana slices.