Melt butter in a 15- x 10-inch jellyroll pan in a 300° oven. Spread nuts in pan.
Bake at 300° for 30 minutes, stirring every 10 minutes.
Microwave bark coating in a 1-quart glass bowl at MEDIUM (50% power) 2 to 3 minutes or until melted. Stir in nuts. Drop by rounded teaspoonfuls onto wax paper; let stand until chocolate hardens.
