01 -
Preheat the oven to 375°F and lightly grease a 2-quart or 9x9-inch baking dish with nonstick cooking spray.
02 -
Combine brown sugar, self-rising flour, and softened butter in a bowl and mix with a fork until crumbly. Stir in oats and chopped pecans, then set aside.
03 -
In a medium bowl, whisk together self-rising flour, sugar, and milk until just blended. Whisk in the melted butter until combined, then pour the mixture into the prepared baking dish.
04 -
Layer sliced bananas evenly over the filling, then crumble the streusel topping evenly on top of the banana layer.
05 -
Bake the dish for 45 to 50 minutes, or until the topping is golden brown and the filling is set without jiggle.
06 -
Allow to cool slightly before serving. Optionally, garnish with vanilla ice cream and additional banana slices if desired.