Begin by lining an 8-inch square baking pan with wax or parchment paper.

If your nut butter is thick, gently warm it in the microwave for about 15-20 seconds.

In a large mixing bowl, combine your chosen cereal, softened nut butter, and liquid sweetener. Stir until well blended.

Pour the cereal mixture into the prepared baking pan, spreading it evenly.

Place a second sheet of parchment paper over the mixture and press down firmly to compact the ingredients.

Refrigerate or place the pan in the freezer for at least 30 minutes to firm up.

Once set, lift them out using the parchment overhang and cut into squares or rectangles.