Lemon-Blueberry Snack Cake

Ingredients:

• 1 1/2 cups all-purpose flour
• 1 1/2 teaspoons baking powder
• Pinch of salt
• 8 tablespoons (1 stick) unsalted butter, at room temperature
• 1 cup sugar
• 1 tablespoon lemon zest
• 2 large eggs, at room temperature
• 1/2 cup buttermilk, at room temperature
• 1 teaspoon vanilla extract
• 1 tablespoon lemon juice
• 1 pint blueberries

Source