In a small bowl, combine graham cracker crumbs, oil and brown sugar. Stir until combined.
Chocolate Cake
Preheat the oven to 350. Grease a Bundt pan well with floured baking spray. Set aside.
In the bowl of an electric mixer on a medium speed, beat together the eggs and oil until combined. Add the sugar, brown sugar, baking soda, baking powder and vanilla. Beat until combined and smooth.
Turn the mixer to low speed and add the cocoa powder, followed by the milk, then the flour. Beat until just combined.
Pour half of the batter into the prepared Bundt pan, then sprinkle about ⅔ of the graham cracker streusel over the batter, distributing it evenly. Top with the remaining batter and then sprinkle the remaining crumbs over the top.
Bake at 350 for 50 minutes.
Allow the cake to cool completely before glazing.
Marshmallow Glaze
Combine the marshmallow fluff, vanilla and boiling water and combine until spreadable consistency. Add up to another teaspoon of boiling water, as needed.
Spread over the cooled cake. Top with crushed graham crackers and chocolate shavings.
Recipe by Overtime Cook at https://overtimecook.com/2014/08/14/smores-bundt-cake/