Preheat your oven to 350°F (175°C) and grease a baking dish to prevent sticking.
In a large mixing bowl, combine the mashed bananas with almond or peanut butter, honey (or maple syrup), and vanilla extract, mixing until well combined.
Add the rolled oats, baking powder, cinnamon, and salt to the banana mixture, stirring until everything is evenly mixed.
Gently fold in the blueberries to distribute them throughout the mixture without crushing them.
Spread the mixture evenly in the prepared baking dish, smoothing the top with a spatula.
Bake in the preheated oven for 25-30 minutes, or until the edges are golden brown and the center is set.
Allow the bars to cool in the dish before cutting into squares. This cooling time helps them set properly and makes them easier to cut.
For a nut-free version, substitute sunflower seed butter for the almond or peanut butter, and ensure all other ingredients are nut-free.
If using frozen blueberries, do not thaw them before adding to the mixture to prevent the batter from becoming too watery.
These oat bars can be served as a quick breakfast, a portable snack for school or work, or paired with a scoop of ice cream for a delightful dessert.
Find it online: https://recipesground.com/blueberry-banana-oat-bars/