Chocolate Peanut Buddy Bars

1 cup peanut butter
6 Tbsp. (3/4 stick ) butter,softened
1 1/4 cups sugar
3 eggs
1 tsp. vanilla
1 cup flour
1/4 tsp. salt
one 11 1/2 oz. pkg. milk chocolate chips, divided

Preheat oven to 350 degrees. In large mixer bowl, beat peanut butter and butter until smooth. Add sugar, eggs and vanilla; beat until creamy. Blend in flour and salt. Stir in 1 cup milk chocolate chips. Spread into ungreased 13 x 9 baking pan. Bake 25 to 30 minutes or until edges begin to brown. Immediately sprinkle with remaining chips. Let stand 5 minutes until chips become shiny and soft. Spread chips evenly over top. Cool completely. Cut into 1 1/2 inch bars. Makes 48 bars.