what you need:
1 1/3 cups of semisweet chocolate chips
2/3 cup sweetened condensed milk
1 teaspoon of vanilla extract
1 1/3 cups of mini marshmallows
3 graham crackers broken up into pieces
line an 8in square pan with foil and coat with cooking spray; set aside. in a saucepan over low heat, melt chips with milk; stir until smooth. remove from heat; cool for 2 minutes. stir in vanilla. fold in marshmallows and graham crackers.
pour into pan. throw it in the fridge for 1 hour or until firm. lift out of the pan and cut into pieces!