Combine peanut butter and honey in a large pot; cook over medium-low heat until peanut butter and honey are melted (about 2-3 minutes). Add crispy brown rice cereal and chopped dried cherries to the mixture; stir until sticky. Press into a 9- x 13-inch pan coated with cooking spray. Chill in refrigerator 40 minutes. Cut into 15 (2 1/2 - x 3-inch) squares; serve.