1/2 c. shortening
1/2 c. peanut butter
1/2 c. sugar
1/2 c. brown sugar
2 eggs
1 1/2 c. flour
3/4 tsp. baking soda
1/2 tsp. baking powder
1 (12 oz.) pkg. chocolate chips
1/4 tsp. salt
1/2 c. nuts (optional)

Heat oven to 375 degrees. Grease 13 x 9 pan.

Mix first five ingredients; sift flour, soda, baking powder, and salt; add to mixture. Add 1/2 package of chocolate chips and nuts; spread in pan.

Bake about 20 minutes. Remove from oven; sprinkle remaining chocolate chips over top. Cover with cookie sheet until melted, then spread. Cut into squares.