Mississippi Mud

Preheat oven to 350ºF.

Beat butter and sugar together. Add eggs one at time, and mix after each. Blend in cocoa. Mix in flour and salt. Add vanilla. Stir in pecans.

Pour batter into greased and floured 15×10 pan. Bake at 350ºF for 20 minutes (I bake it less; check it after around 15 minutes). Remove from oven and spread marshmallows evenly on top. Bake 3-5 additional minutes until marshmallows start to spread.

Drizzle warm frosting on top. Cool and cut into squares.

For the frosting, stir together butter, cocoa and milk in a saucepan over medium heat, until butter is melted. Remove from heat and beat in powdered sugar and vanilla until smooth. Drizzle on top of warm cake.