In a mixing bowl, combine the heavy whipping cream, sweetened condensed milk, and vanilla extract. Whip until the mixture forms soft peaks.

Gently fold in the mini marshmallows into the whipped mixture.

In your baking dish, spread half of the whipped mixture evenly. Then sprinkle half of the chocolate chips on top.

Sprinkle half of the crushed graham crackers over the chocolate chips.

Spread the remaining whipped mixture over the graham crackers, followed by the rest of the chocolate chips and graham crackers.

Cover the dish with plastic wrap and refrigerate for at least two hours.

Once chilled, drizzle with chocolate syrup before serving.

Use a spatula to scoop servings into bowls.