Preheat the oven to 350 F. Longer details
Mix the wet ingredients. Using a bowl big enough for all the ingredients mix the eggs, called butter, oil, vanilla, and sugar.
Add the dry ingredients. Add the dry ingredients to the top of the wet mixture. Combine the flour, coco powder, and baking soda on top first and then mix into the wet mixture.
Stir in the peanut butter chips and zucchini. You just want them evenly distributed.
Pour into muffin pan. With liners in the muffin tin pour mixture so that it is about 2/3 full. If you prefer to make a loaf skip down below.
Top with peanut butter cups. Put a small pinch of coarsely chopped peanut butter cups on top of each muffin.
Bake for 18-24 minutes. Start checking your muffins around the 18 minute mark for doneness.