Warm the Mixture: Combine the milk, sugar, PB2, cocoa powder, and a pinch of salt in a small pot and stir until evenly mixed. Warm over low heat, stirring, until the sugar dissolves—this should take about 1–2 minutes.
½ cup milk, 2 ½ teaspoons white sugar, 2 tablespoons PB2, 1 teaspoon cocoa powder, pinch salt
Pour Into Jar: Pour the slightly warmed mixture into a jar or individual containers where you’ll prepare the oats.
Add Oats and Chia: Add the rolled oats and chia seeds to the jar, then stir well to combine so the oats are evenly coated.
½ cup rolled oats, ½ tablespoon chia seeds
Chill Overnight: Cover the jar(s) and refrigerate for at least 6 hours (or overnight) to allow the oats to soften and thicken.
Serve with Toppings: Remove from the fridge and serve cold, adding your favorite toppings if desired.