In a bowl, combine the oats, chia seeds, and milk. Let sit for 10 minutes to soften.
Melt the dark chocolate and coconut oil or butter together.
Add the melted chocolate mixture, maple syrup, vanilla, and salt to the oat mixture. Stir until well combined.
Cover and chill in the freezer for 30 minutes or in the refrigerator for 1 hour.
Roll the mixture into 10–11 small balls or 6 large truffles. The longer you chill the mixture, the firmer it will become.
Store refrigerated.
