Preheat the oven to 350 degrees F and grease or line six muffin tins.
Mash the banana, pumpkin, and almond butter together in a large mixing bowl. Add the milk, maple syrup, and salt. Stir to thoroughly combine. Stir in the oats and chocolate chips and mix to incorporate.
Distribute the mixture among the prepared muffin tins (as Ann suggests, a large ice cream scoop works well for this). Bake for 20 minutes or until the muffins are firm on the top and just cooked through the center. Cool in the pan for 5 minutes and then remove. Enjoy right away or allow to cool completely. Cover and store any leftovers muffins in the refrigerator.