Mix all ingredients in a large bowl until well combined.
Press firmly into 6 x 8 inch (15 x 20 centimeters) food storage containers.
Refrigerate for 1 hour to firm up.
Cut and serve.
Store in an airtight container on the countertop for 3 days or in the refrigerator for up to a week.
Video
Notes
-*I generally buy organic oats or something that indicates no glyphosate residue since oats, particularly, are highly sprayed with glyphosate.-Substitute any nut or seed butter for peanut butter as desired.-Make these nut-free by removing the walnuts.