Microwave Fudge - cooking recipe

Ingredients

3 c. semi-sweet or chocolate chips
1 (14 oz.) can sweetened condensed milk
1/4 c. butter or margarine
1 c. chopped nuts

Preparation

Place all ingredients, except walnuts, in a large bowl. Microwave at Medium (50% power) until chocolate chips are melted (about 3 to 5 minutes), stirring once or twice during cooking. Stir in nuts.
Pour into well-greased (8 x 8-inch) square baking dish.
Refrigerate until set (overnight if possible).