Add the old fashioned oats, PB2 powdered peanut butter, cinnamon, and salt to a small saucepan.
Whisk the dry ingredients thoroughly to remove any lumps from the powdered peanut butter.
Mash half of the banana until smooth.
Add the mashed banana, soy milk, and dairy-free Greek yogurt if using.
Whisk everything together until fully combined.
Place the saucepan over medium to medium-low heat.
Cook for 5–10 minutes, stirring occasionally to prevent sticking and help create a creamy texture.
Once the oats are tender and the mixture reaches your preferred consistency, remove from heat.
Stir in the vanilla extract.
Transfer the Vegan High Protein Peanut Butter Oatmeal to a serving bowl.
Add desired toppings such as banana slices, peanut butter, chocolate chips, or a drizzle of maple syrup.
Serve warm and enjoy.