In a large mixing bowl, combine the oats, peanut butter, honey, chocolate chips, flaxseeds, vanilla extract, and salt.

Stir the mixture with a heavy-duty spatula until all dry ingredients are fully incorporated and the mixture is cohesive.

Cover the bowl with plastic wrap and refrigerate for 30 minutes to allow the oats to hydrate and the mixture to set.

Using a 1-tablespoon cookie scoop or measuring spoon, portion the chilled mixture into 12 equal segments.

Roll each portion between the palms of your hands to form a firm, 1-inch diameter sphere.

Place the balls in a single layer in an airtight container and store in the refrigerator for up to one week.