Preparation Steps

• Preheat the oven to 350°F (175°C). Grease a 9-inch round cake pan.
• In a large bowl, cream together the butter and sugar until light and fluffy.
• Beat in the eggs one at a time, then stir in the lemon zest.
• Combine the flour and baking powder; add to the creamed mixture alternately with the milk.
• Fold in the blueberries carefully, then pour the batter into the prepared pan.
• Bake for 30 to 35 minutes in the preheated oven, or until a toothpick inserted into the center of the cake comes out clean.