Preheat oven to 350 degrees
Sprinkle blueberries with ¼ cup sugar and lightly stir to coat.
In another bowl sift together flour, salt and baking powder
In a separate bowl mix butter and sugar until fluffy. Add vanilla, eggs, yogurt and lemon zest and mix well to combine.
Slowly add your flour mixture and mix well until completely combined.
Fold in blueberries.
Spray a bunt pan with nonstick coating. Pour batter into pan and bake for about 1 hour or until a toothpick inserted in the middle come out clean.
You can top this with powdered sugar.