Peanutty Chocolate Chip Bars
["1 c. peanut butter (smooth or chunky)", "1 c. firmly packed brown sugar", "2/3 c. light or dark Karo syrup", "1/2 c. butter and margarine", "2 eggs", "1 tsp. vanilla", "2 1/2 c. flour", "1 1/2 tsp. baking powder", "1/2 tsp. salt", "2 c. (12 oz.) semi-sweet chocolate pieces"]
["In large bowl, mix with mixer peanut butter, sugar, corn syrup, butter, eggs and vanilla until smooth.", "Reduce speed; beat in flour, baking powder and salt until blended.", "Stir in 1 1/2 cups chocolate pieces.", "Spread evenly in ungreased 15 x 10 x 1-inch pan."]
["peanut butter", "brown sugar", "light", "butter", "eggs", "vanilla", "flour", "baking powder", "salt", "semi-sweet chocolate pieces"]