Preheat oven to 350 degrees. Grease a pizza pan or cookie sheet.
Roll out dough and form into a heart shape, making sure to roll the edges up for a crust. Brush on melted margarine and sprinkle on cinnamon & sugar.
Arrange Dandies Marshmallows within the heart shape, covering the area between the crust completely.
Sprinkle on graham cracker crumbs and bake for 25-30 minutes.
Once removed from the oven, drizzle on melted chocolate.
In a small bowl, combine powdered sugar, milk and vanilla whisking until a glaze forms. Drizzle glaze over pizza. Let cool slightly and enjoy!