2 sticks butter, softened
3/4 c. brown sugar
3/4 c. white sugar
2 eggs
2 c. flour
1 tsp. salt
1 tsp. baking soda
1 tsp. vanilla
1 (12 oz.) pkg. chocolate chips

Mix sugar, brown sugar and eggs into butter by hand. Batter will be very stiff. Then add remaining ingredients except chocolate chips. Spread batter in ungreased 13 x 9 inch pan. Top with chocolate chips and mix chocolate chips in with some batter. Bake at 350 degrees for 25 minutes.