Nuclear Fudge - cooking recipe

Ingredients

1 (16 ounce) package confectioners' sugar
1/2 cup cocoa powder
1/4 teaspoon salt
1/4 cup milk
1/2 cup margarine, cut into four pieces
3/4 cup chopped nuts (optional)
1 teaspoon vanilla extract
1 tablespoon butter, or as needed

Preparation

Mix sugar, cocoa powder, and salt in a microwave-safe mixing bowl. Pour milk over the sugar mixture. Arrange margarine pieces atop the mixture, but do not mix into it.
Heat in microwave for 2 minutes. Stir the mixture thoroughly and heat for 1 minute more; stir again.
Fold nuts into the chocolate mixture; add vanilla and stir.
Grease an 8-inch glass baking dish with butter. Pour batter into the prepared dish.
Freeze batter until set, about 20 minutes.