Chocolate Marshmallow Brownies

1 cup butter
½ cup cocoa
2 cups sugar
4 eggs – 1 at a time
1 ½ cups flour
2 t. vanilla
1 ½ cups nuts
½ t. salt
Cream butter, cocoa and sugar. Add remaining ingredients. Put in 11x17x3/4 pan. Bake @ 350* for 25 mins. Remove from over and sprinkle w/ pkg mini marshmallows. Spread all over. Return to over for exactly 3 mins. Remove from oven and cool.
Frost w/
½ cup butter
1 2/3 cup powdered sugar
1/3 cup cocoa
1/3 cup canned milk
Grandma Moss