Step 1: Preheat the Oven. Start by preheating your oven to 350°F (175°C). Line two baking sheets with parchment paper.

Step 2: Combine Dry Ingredients. Whisk together the flour, baking soda, and salt until well mixed.

Step 3: Cream Butter and Sugar. Cream softened butter and granulated sugar until fluffy. Add in the egg, lemon juice, and lemon zest.

Step 4: Incorporate Dry Ingredients. Gradually add the flour mixture to the wet ingredients until just combined.

Step 5: Fold in Blueberries. Gently fold in the fresh blueberries, ensuring they are evenly distributed.

Step 6: Shape the Cookies. Drop rounded portions of dough onto the prepared baking sheets, spacing them about two inches apart.

Step 7: Bake the Cookies. Bake for 10-12 minutes until golden brown around the edges and soft in the center.

Step 8: Cool and Serve. Let cookies cool on sheets for 5 minutes before transferring to a wire rack.