Peanut Butter Bars IV

1 cup peanut butter

6 tablespoons butter

¾ cup packed brown sugar

½ cup white sugar

1 teaspoon vanilla extract

3 eggs

1 cup all-purpose flour

2 cups semisweet chocolate chips

Mix peanut butter, butter or margarine, and sugars until creamy. Stir in vanilla. Beat in eggs. Mix in flour. Stir in 3/4c chocolate chips. Spread dough into a greased 9 x 13 inch pan.

Bake at 350 degrees F (175 degrees C) for 20 to 25 minutes. Remove pan from oven, and sprinkle with the rest of the chocolate chips. Let stand 5 minutes and spread. Cool, and cut into bars.