Preheat oven to 350°F (175°C) and line a baking sheet with parchment paper.
Cream butter and sugar until light and fluffy (about 3–5 minutes).
In a separate bowl, whisk flour, baking soda, and salt.
Gradually mix dry ingredients into the butter mixture.
Fold in blueberries, lemon zest, lemon juice, and vanilla extract.
Drop spoonfuls of dough onto the baking sheet, spacing evenly.
Bake for 12–15 minutes until edges are lightly golden.
Let cool, then dust with powdered sugar if desired.
These Blueberry Lemon Heaven Cookies come out soft, fragrant, and perfectly golden every time.