Another oldie that I dug up from my monster recipe collection! This is really good.
1/2 cup butter at room temperature
2 teaspoons lemon juice
7/8 cup + 1 tablespoon sugar (see note below)
1 egg at room temperature
1 teaspoon vanilla
2 cups flour
2 teaspoons baking powder
1 teaspoon salt
2 cups blueberries
Note: 7/8 cup = 3/4 cup + 2 tablespoons; the extra tablespoon above is for sprinkling over the cake before it goes in the oven
Preheat oven to 350 degrees.
Cream the butter and lemon juice with 7/8 cup sugar.
Add egg and vanilla and beat till combined.
Whisk the flour, baking powder, and salt together.
Add flour mixture to batter a little at a time, alternating with buttermilk. Fold in the blueberries.
Spread into a prepared 9 inch pan and bake for 35 to 45 minutes or until a toothpick inserted in the top comes out clean.