Use creamy peanut butter: Creamy peanut butter mixes the easiest and helps the bars hold together better than a thicker natural peanut butter.
Stir well before adding the cereal: Make sure the peanut butter, maple syrup, coconut oil, and vanilla are fully combined so the cereal gets coated evenly.
Press firmly into the pan: Use the back of a spoon or a piece of parchment paper to press the mixture down so the bars hold together once chilled.
Let them chill completely: Refrigerating the bars helps them firm up and makes them much easier to slice cleanly.
Do not crush the cereal too much: Stir gently so the brown rice cereal stays crisp and does not lose its texture.