Pulse the full OREO Cookies (no need to separate cream from cookie) in a food processor or blender until it is in crumbs.
Using a hand held mixer, beat the OREO Cookie crumbs and cream cheese together until well combined. Roll the mixture into balls. Chill the balls, covered tightly, for an hour in the fridge OR freeze for 20 minutes.
Once the balls are chilled, melt the candy melts according to package directions. You may need a teaspoon (or a few) of vegetable oil to get the chocolate thin enough to dip in. Every chocolate is a little different so if needed, I'll just add the oil slowly until it coats the truffles well.
Place a ball on a fork and then spoon the melted chocolate evenly over the ball. Tap the fork holding the ball to remove excess chocolate.
Press a red heart candy in the center.
Allow to dry at room temperature. Store leftovers in an airtight container in the fridge.
Depending on how quickly you work and/or how fast the chocolate hardens, you might have to re-melt the chocolate a few times.