Add the peanut butter and honey to a bowl and microwave for 30-60 seconds, until the peanut butter is warm and gooey. Stir until fully combined, then set it aside.
Add the Cheerios, raisins and peanut butter mixture to a large bowl. Mix until everything is evenly coated.
Add the cereal mix into an 8×8 pan lined with parchment paper. Use a piece of parchment paper to press the cereal down evenly. Then, refrigerate it for at least an hour to allow it to set.
Remove it from the pan, then cut it into pieces. I like to make 2 cuts in one direction, then 5 cuts in the opposite direction to make 18 pieces. Enjoy!