Preheat oven to 350°. In a bowl, whisk the first 5 ingredients until blended. Stir in oats. , Arrange banana slices in a single layer in a greased 9-in. square baking pan; sprinkle with blueberries. Pour oatmeal mixture over top, spreading evenly. Bake until set, 25-30 minutes. Remove from oven. Preheat broiler., For topping, in a small bowl, mix brown sugar, flour and butter with a fork until crumbly; stir in pecans. Sprinkle over oatmeal. Broil 7-8 inches from heat until lightly browned, 2-3 minutes. Let stand 10 minutes before serving.