2 cups (12-ounce package) semisweet chocolate chips
1 can (14 ounces) sweetened condensed milk (not evaporated milk)
1 teaspoon vanilla extract
Dash of salt
1 cups peanut butter chips

Line 8-inch square pan with foil.

In heavy saucepan over low heat, melt chocolate chips with sweetened condensed milk, vanilla, and salt. Blend well.

Remove from heat.

Add peanut butter chips. Stir just to distribute chips throughout mixture.

Spread evenly into prepared pan.

Refrigerate 2 hours or until firm.

Remove from pan. Peel off foil.

Cut into squares.

Store tightly covered in refrigerator.