Cream butter and sugar until light and fluffy. Add vanilla, well-beaten egg, flour and salt. Mix well. Spread in greased 8" square pan (or equivalent). Bake at 350F for 15 minutes. Sprinkle with chocolate chips. Return to oven and bake for 5 more minutes or until chocolate chips are soft. Smooth the chocolate chips with a knife or the back of a spoon, then sprinkle with chopped nuts. Cut at once into bars, then cool.
Adapted from The Settlement Cook Book, 1965Ingredients