By Tessie2


16 [1-ounce / 28-g each] squares semi-sweet chocolate
1 [10 1/2-ounce / 284-mL] can sweetened condensed milk
2 teaspoons [10 mL] vanilla
1/2 cup [125 mL] peanut butter

In a large bowl, melt chocolate squares with sweetened condensed milk in microwave on 'HIGH' for 2 to 3 mintues, until chocolate is almost all melted; mix until completely melted.
Stir in vanilla.
Spread into an 8-inch [20-cm] square pan, lined with aluminum foil.
Drop teaspoons [5 mL] of peanut butter over the fudge.
Run a knife through fudge and peanut butter, to get a marbled peanut butter chocolate fudge.
Refrigerate for 2 hours, until firm.
Cut into squares.