Mix the base

• Add the rolled oats, chia seeds and salt to a bowl or jar
• Pour in the milk, Greek yogurt, maple syrup and vanilla extract
• Stir until everything is evenly combined

Add the cookie dough flavors

• Stir in the peanut butter until fully incorporated
• Fold in the chocolate chips

Chill overnight

• Cover the jar and refrigerate until the oats are soft and thick

Serve

• Stir the oats, add a splash of milk if too thick
• Top with extra chocolate chips and serve cold