In mixing bowl, COMBINE peanut butter, eggs, sugar and butter; MIX at high speed to quickly blend well.
PRESS peanut butter mixture into greased, 9-inch square baking pan.
BAKE at 325 Ffor 15 minutes.
COVER with icing; CUT into bars.
Per Serving (excluding unknown items): 551 Calories; 36g Fat (55.6% calories from fat); 16g Protein; 48g Carbohydrate; 3g Dietary Fiber; 69mg Cholesterol; 341mg Sodium. Exchanges: 1/2 Grain(Starch); 2 Lean Meat; 6 Fat; 2 1/2 Other Carbohydrates.