Find recipes for Lemon-Blueberry Muffins and other Course recipes. Get all the best recipes at . Recipe directions: In a large bowl, cream butter and sugar until light and fluffy. Add eggs, one at a time, beating well after each addition. Beat in the milk, lemon juice and peel. Combine the flour, baking powder and salt; add to creamed mixture just until moistened. Fold in blueberries.