Preheat your oven to 350 degrees F (175 degrees C). Grease and flour a loaf pan.
In a large bowl, cream together the butter and sugar until light and fluffy.
Add the eggs one at a time, mixing well after each addition.
Gradually add the flour, stirring just until the batter is smooth.
Pour the batter into the prepared pan and smooth out the top.
Bake for about 55 minutes or until a toothpick inserted into the center comes out clean.
Let the cake cool in the pan for 10 minutes before turning it out onto a wire rack to cool completely.