Combine cashew butter, melted coconut oil, almond flour, ground flax, and syrup in a bowl. Stir together until combined and smooth. If your cashew butter is very firm, it can help to microwave this mixture for up to 30 seconds to soften it.
Assess your batter: Some cashew butters are more loose than others. Your batter should be thick. If not, add another tablespoon or two of almond flour.
Add cereal and stir gently to combine.
Place the cashew butter mixture in the freezer for 10 minutes until it's firm enough to roll into balls. Remove from the freezer and roll into bite-size balls. Place the balls on a tray. Refrigerate for about 30 minutes.
Stir chocolate chips and coconut oil together in a microwave-safe bowl. Microwave for 1 minute. Place a lid on it and set aside for a minute. The chocolate should be melted. Stir until well blended and smooth.
Line a cookie sheet or tray with waxed paper. Dip cashew balls in the chocolate using a fork so you can tap off excess chocolate. Place chocolate-covered balls on the prepared tray. Top with flaky sea salt or finely chopped cashews. Once all the balls are coated, place the tray in the fridge to speed up the chocolate setting.
Once the chocolate is fully set, transfer to an airtight container. These will keep in the fridge for up to 10 days or in the freezer up to 2 months.