Put the chocolate in a microwave-safe bowl, microwave for 2 to 3 minutes, stopping to stir after every minute- until the chocolate is smooth. Stir in the peppermint extract.
Drop a graham cracker into the melted chocolate, turn it over with a spoon to cover all sides, wiggle the graham cracker to shake the extra chocolate off and then put it on wax paper (yep, your fingers will get kinda messy). Dab a little chocolate onto any parts of the graham cracker that your fingers might have rubbed off. Sprinkle with smashed peppermint candies.
Let the graham crackers sit until the chocolate is completely set, or put them into the refrigerator to speed up the process.