Step 1

Preheat oven to 350º F and lightly grease a square baking dish with butter or non-stick spray.

Step 2

In a medium bowl, whisk together 1 3/4 cups flour, baking powder and salt.

Step 3

In a large bowl or mixer, cream together butter and sugar and lemon zest for 3-5 minutes, or until fluffy and lightened in color.

Step 4

Add in egg and vanilla extract and continue to beat until incorporated.

Step 5

Starting with the liquid, take turns adding in buttermilk and flour mixture until everything is just combined.

Step 6

Toss blueberries in remaining 1/4 cup flour until coated, then fold blueberries into batter.

Step 7

Pour batter into greased baking dish, then top with 1-2 tablespoons sugar.

Step 8

Place baking dish in oven and bake for 40 minutes, or until toothpick inserted in center comes out clean.

Step 9

Remove dish from oven and let cool before serving. Enjoy!