6 layer chocolate cake with marshmallow filling

Ingredients For 6 layer chocolate cake with marshmallow filling

• 2 1/2 c

  + 1 tablespoon all purpose flour
• 3 c

  sugar
• 1 c

  + 1 tablespoon cocoa powder (i used ghirardelli)
• 1 Tbsp

  baking soda
• 1 1/2 tsp

  baking powder
• 1 1/2 tsp

  salt
• 3

  eggs, at room temperature
• 1 1/2 c

  buttermilk, at room temperature
• 1 1/2 c

  strong black coffee, hot
• 3/4 c

  vegetable oil
• 1 1/2 Tbsp

  vanilla extract
• 16 lg

  white marshmallows
• 1 c

  powdered confectioners’ sugar, sifted
• 1 c

  (2 sticks) butter, at room temperature
• 1 tsp

  vanilla paste (i used nielson madagascar) or pure vanilla extract
• 7 1/2 oz

  marshmallow fluff
• 1 lb

  butter (4 sticks), at room temperature
• 4 c

  confectioners’ sugar, sifted
• 3/4 c

  ovaltine classic (brown in color)
• 1 Tbsp

  pure vanilla extract
• pinch of salt
• 8 oz

  semisweet or dark chocolate, melted and cooled (i used a combination of both)
• 1/2 c

  heavy whipping cream