3/4 c. butter
1 box light brown sugar
3 eggs
1 3/4 c. self-rising flour
1/2 tsp. vanilla
6 oz. pkg. chocolate chips

Cream butter and sugar. Add eggs one at a time, mixing after each addition. Add vanilla. Add flour, gradually mixing after each addition. Mix in half of chocolate chips. Pour into ungreased 13 x 9 inch pan and bake 30 to 40 minutes at 350 degrees. Place remaining chocolate chips on top of batter before baking. Note: Measure and sift flour very carefully, a small error in measurement makes a great difference. Do not overbake.