Add chia seeds, milk, and instant coffee to a small bowl or mason jar. Stir well to combine. Adjust sweetness if needed by adding stevia or keto friendly sweetener to taste.
Place in fridge for 2-3 hours or preferably overnight to thicken. Stir and serve.
Top with cacao nibs, sugar free chocolate chips, and/or unsweetened/plain/low carb yogurt if desired.