2 stick butter
2 c. brown sugar
3 eggs
1 tsp. vanilla
12 oz. pkg. chocolate chips
2 c. flour
1 tsp. baking soda
1 tsp. salt

Sift together flour, baking soda and salt. Melt butter and brown sugar together and let cool. Beat in eggs one at a time. Add vanilla. Pour into a large bowl and add flour mixture, slowly, mixing well. Add chocolate chips. Spread evenly in greased 9"x13" pan. Bake in 350 degree preheated oven for 1/2 hour. Cut into squares when cooled.