Peanut Butter Brownies

From Cooking with the Horse & Buggy People II 3/4 cup shortening 3/4 cup peanut butter 2 1/4 cups sugar 5 eggs 1 1/2 tsp vanilla 1 1/2 cups all-purpose flour 1 1/2 tsp baking powder 3/4 tsp salt 1 1/2 cups chocolate chips 3/4 cup chopped peanuts Put in a 10×15 pan at 350F…