Make sure the blueberries are completely dry before adding them to the cookie dough.Don't worry if the mixture looks curdled when the eggs are added. Once the flour is added, the dough will look like regular cookie dough.When measuring your flour, use the spoon-and-level method. This involves spooning the flour into a dry measuring cup and leveling it off with the straight edge of a knife before adding it to the other ingredients.Because of the amount of butter in this recipe, your cookies wi...
