Making Blueberry Oatmeal Bars is a simple and enjoyable process. Follow these step-by-step instructions to create your own batch:

1. Preheat Your Oven: Start by preheating your oven to 350°F (175°C) and greasing a baking dish (8×8 inches works well).
2. Mix Dry Ingredients: In a large bowl, combine the rolled oats, salt, cinnamon, and baking powder. Mix until well combined.
3. Prepare Wet Ingredients: In another bowl, mash the ripe bananas or pour the applesauce. Add honey (or maple syrup) and vanilla extract. Stir until smooth.
4. Combine Mixtures: Pour the wet mixture into the dry ingredients and mix until just combined. Be careful not to overmix; a few lumps are okay.
5. Add Blueberries: Gently fold in the blueberries and optional nuts into the mixture.
6. Transfer to Baking Dish: Pour the mixture into the prepared baking dish, spreading it evenly with a spatula.
7. Bake: Place the dish in the preheated oven and bake for 25-30 minutes. The top should be golden, and a toothpick should come out clean when inserted.
8. Cool: Once baked, remove the dish from the oven and let it cool for 10-15 minutes before slicing.
9. Slice into Bars: After cooling slightly, cut into squares or rectangles.

Enjoy your homemade Blueberry Oatmeal Bars!