In a large mixing bowl, combine the rolled oats, grated carrots, almond flour, shredded coconut, cinnamon, nutmeg, and salt. Mix well until all dry ingredients are evenly distributed.
In a separate bowl, whisk together the maple syrup, almond butter, and vanilla extract until smooth.
Pour the wet mixture into the dry ingredients and stir until fully combined. If using, fold in the raisins or walnuts.
Using your hands, scoop out small portions of the mixture and roll them into bite-sized balls, about 1 inch in diameter.
Place the balls on a parchment-lined baking sheet and refrigerate for at least 30 minutes to firm up.
Once chilled, store the carrot cake bites in an airtight container in the refrigerator for up to one week.