Mississippi Mud Brownies

Here is for Jenny's request:

1 cup butter, softened
2 cups sugar
1/3 cup cocoa
4 eggs
1 1/2 cups flour
2 tsp. vanilla
1/4 tsp. salt
1 1/2 cups chopped nuts (optional)
1 pound mini marshmallows

Mix butter, sugar and cocoa. Stir in eggs; add flour, vanilla, salt. Add nuts, if desired. Stir; pour into greased, 1-inch deep baking sheet. Bake at 350 degrees for 20 minutes, or until done. Cover with 1 pound marshmallows; bake for 3 more minutes.

Frosting:
1 2/3 cups powdered sugar
1/2 cup butter
1/3 cup cocoa
1/3 cup canned evaporated milk

Mix ingredients together and spread over cooked brownies.

Yummy.