S'Mores Cake

Ingredients

• Cake
• 1 1/2 cups cups graham cracker crumbs (about 15 whole crackers ground in processor)
• 1/2 cup all-purpose flour
• 2 1/2 teaspoons baking powder
• 1/2 cup unsalted butter, room temp
• 3/4 cup sugar
• 2 large eggs
• 1 teaspoon vanilla extract
• 3/4 cup whole milk
• Frosting and Ganache
• 16 ounces bittersweet chocolate (do not exceed 61% cacao), chopped
• 1 cup (scant) heavy whipping cream
• 1 cup unsalted butter, room temp
• 1 cup confectioners sugar
• 1/4 teaspoon vanilla extract
• 1 cup marshmallow fluff
• 3/4 cup marshmallows