Line an 8x12-inch baking sheet with parchment paper or wax paper. For slightly thicker bars, use an 8x8-inch square baking pan.

In a large microwave-safe bowl, add the chocolate chips. Set the bowl in the microwave and heat for 20 seconds. Give it a good stir, then continue heating in 20-second intervals, stirring each time, until the chocolate is melted. Alternatively, you can melt the chocolate using a double boiler on the stove top.

Once the chocolate is melted, gently fold the rice cereal into the smooth chocolate until it's evenly coated.

Transfer the cereal/melted chocolate mixture to the prepared baking sheet. Use a spatula to spread it out into an even layer.

Set the baking sheet in the refrigerator for about an hour, or until the chocolate is completely cooled and set.

Once the chocolate has set, remove the baking sheet from the refrigerator and cut or break the chocolate crunch bars into serving pieces.

Serve chilled or at room temperature