Bittersweet Truffles - cooking recipe

Ingredients

1/2 c. butter or margarine
3/4 c. cocoa
1 (14 oz.) can sweetened condensed milk
1 tsp. vanilla extract
cocoa

Preparation

Melt butter in a heavy saucepan over low heat; stir in 3/4 cup cocoa.
Gradually add condensed milk, stirring constantly, until smooth.
Cook over medium heat, stirring constantly, until thickened and smooth (about 3 minutes).
Remove from heat; stir in vanilla.
Pour mixture into a lightly greased 8-inch square pan. Cover mixture and chill at least 2 hours and cut into squares.