Creating delicious Blueberry Lemon Bars is simple and straightforward. Follow these steps for perfect results:

1. Preheat your oven to 350°F (175°C). Lightly greasing an 8-inch square baking dish is essential for easy removal.
2. Prepare the crust: In a medium bowl, combine the flour, powdered sugar, and salt. Then, add the softened butter and mix until crumbly.
3. Press the Crust: Transfer the crust mixture to the baking dish and press it evenly across the bottom. Bake for 15 minutes until lightly golden.
4. Make the filling: In a separate bowl, whisk together the eggs, granulated sugar, lemon juice, lemon zest, and baking powder until smooth.
5. Add Blueberries: Gently fold in the blueberries, ensuring they are evenly distributed throughout the filling mixture.
6. Pour into the crust: Once the crust is finished baking, pour the lemon blueberry filling over the hot crust.
7. Bake: Return to the oven and bake for an additional 25-30 minutes, or until the filling is set and slightly golden.
8. Cool completely: Remove from the oven and let the bars cool in the pan for about 30 minutes. Once cooled, transfer them to the refrigerator to chill before slicing.
9. Slice and serve: Once fully chilled, cut into squares and dust with powdered sugar for an elegant touch.

Following these steps will ensure your Blueberry Lemon Bars are perfectly baked and absolutely scrumptious.