Pre heat the oven to 350 degrees. In a bowl cream together butter and granulated sugar until light and fluffy. Beat in eggs one at a time. Then add the bananas, peanut butter, vanilla, and milk.
In a separate bowl whisk together the flour, salt, and baking soda. Mix half of the flour mix into the wet ingredients. Once mixed well add the rest of the flour mix. Fold in the chocolate ships.
Spray the muffins tin with cooking spray or use cupcake liners. Fill each muffin cup 3/4 full. I got 18 muffins. If you put a little less in each muffin cup you can get 24. Make sure to check them sooner.
18 muffins bakes for 15-18 minutes. Check with a toothpick or sharp knife to see if the center is finished cooking. If the toothpick or knife comes out clean they are done.