"I really wanted to make some granola bars that I could bring to school (seeing that we weren't going to buy them) so I tested some things out and came up with this delicious snack! Stick them in lunches or have them for breakfast, it's a yummy treat for the whole family! You can add any nuts, seeds, and/or berries, if desired."
Pour marshmallows into a microwave-safe bowl and microwave until melted, about 30 seconds. Stir rice cereal, oats, honey, and butter into marshmallows; microwave until heated through, about 30 seconds more. Stir until well-combined. Stir in cranberries, almonds, and cinnamon.
Press mixture into a 6-inch square dish and freeze until set, 30 to 60 minutes. Cut into bars.