Rocky Road Bars

1 package milk chocolate cake mix
1/2 cup butter or margarine melted
1/4 cup packed brown sugar
1/3 cup water
2 eggs
1 cup chopped nuts
3 cups miniature marshmallows
1/3 cup Rich & Creamy chocolate ready-to-spread frosting
Heat oven to 350. Grease and flour rectangular pan, 13 9 2 inches.
Mix half of the cake mix (dry), the butter, brown sugar, water and eggs in large bowl with spoon until smooth.
Stir in remaining cake mix and the nuts. Spread in pan.
Bake 20 minutes; sprinkle with marshmallows. Bake 10 to 15 minutes or until marshmallows are puffed and golden.
Microwave frosting in microwavable bowl uncovered on
High 15 seconds. Drizzle over bars. Cool completely. For easier cutting, use plastic knife dipped in hot water. Cut into 6 rows by 4 rows.