Here’s how to create your Blueberry Oatmeal Bars step by step:

1. Preheat Oven: Start by preheating your oven to 350°F (175°C). Grease a 9×9-inch baking pan or line it with parchment paper for easy removal.
2. Mix Dry Ingredients: In a large mixing bowl, combine the rolled oats, flour, brown sugar, baking powder, salt, and cinnamon. Stir until well blended.
3. Combine Wet Ingredients: In another bowl, whisk together the melted butter, maple syrup (or honey), eggs, and vanilla extract until fully mixed.
4. Mix Together: Gradually add the wet ingredients to the dry ingredients. Stir until combined, ensuring there are no dry spots.
5. Fold in Blueberries: Gently fold in the blueberries, taking care not to smash them if using fresh blueberries.
6. Pour into Pan: Spread the mixture evenly into the prepared baking pan. Make sure to smooth the top so it cooks evenly.
7. Bake: Place the pan in the oven and bake for 30-35 minutes or until the edges are golden brown and a toothpick inserted into the center comes out clean.
8. Cool: Once baked, remove from the oven and let the bars cool in the pan for 10-15 minutes. If you’re using parchment paper, lift the bars from the pan for complete cooling on a wire rack.
9. Cut: Once cool, slice the bars into squares or rectangles for serving.

These straightforward steps will ensure your Blueberry Oatmeal Bars are deliciously successful!