01 -
Line an 8-inch square pan with wax or parchment paper. If making a larger batch, you can double the recipe and use a 9x13-inch pan.
02 -
If needed, gently warm the nut butter until it's easily stirrable. This will help it mix more evenly with the other ingredients.
03 -
In a large bowl, stir together the cereal, nut butter, sweetener of choice (agave, honey, or brown rice syrup), salt (if using), and protein powder (if using) until well combined.
04 -
Pour the cereal mixture into the lined pan. Place a second sheet of parchment paper over the top, and press the cereal down very firmly into the pan. This firm pressure is important as it helps keep the cereal bars from falling apart after cutting.
05 -
Place the pan in the freezer for about 30 minutes, or until the mixture is firm enough to slice into bars.
06 -
Once firm, remove from the pan using the parchment paper overhang and cut into 9 equal bars. Store leftovers in the refrigerator, freezer, or in a cool, dry place on the counter in an airtight container.