Add frozen bananas and almond milk into a high speed blender and blend until it is smooth.
Add in sea salt, maple syrup and vanilla and blend again until those are mixed in.
Line a loaf pan with parchment paper and pour mixture into it. Pour peanut butter on top and use a spoon to mix the peanut butter well with the mixture. You want to create swirls.
Add in chocolate chips and mix again. Smooth out the mixture and place in the freezer overnight (or for 3 hours). Scoop into a bowl when ready to eat.