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Ingredients
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Base
Filling
Topping
Method
Preparation
Preheat the Oven
Preheat your oven to 350°F (175°C).
Prepare Baking Pan
Grease a 9x13 inch baking pan with butter or line it with parchment paper.
Making the Base
Mix Dry Ingredients
In a large bowl, whisk together the all-purpose flour, granulated sugar, baking powder, and salt until well combined.
Combine Mixtures
Pour the wet ingredients into the dry ingredients and stir until just combined. Do not overmix.
Adding the Filling
Add Blueberries
Gently fold in the fresh blueberries and lemon zest into the batter.
Add Brown Sugar
Sprinkle the brown sugar over the top of the batter and gently fold it in to distribute evenly.
Baking
Bake the Conundrum
Pour the batter into the prepared baking pan and spread it evenly. Bake for 35-40 minutes or until a toothpick inserted in the center comes out clean.
Finishing Touches
Cool and Dust
Once baked, allow the conundrum to cool in the pan for 10 minutes. Then, dust with powdered sugar and garnish with fresh mint leaves.
Serve
Cut into squares and serve warm or at room temperature.