Preheat your oven to 350 degrees.
Into large bowl add egg, peanut butter, coconut oil, vanilla & honey. Whisk until ingredients are combined and smooth.
Add in mashed bananas. Stir until well mixed (try to get as many clumps out as you can).
Finally add flour & baking soda into mixture. Fold in until completely incorporated with other ingredients.
Spray either 4 small non-stick cake pans or 8 cupcake holders with baking spray. Evenly divide your mixture into all (you want to fill them 2/3 of the way full).
Bake for 20-25 minutes (depending on your oven). Once cooked allow to cool on cooling rack and begin making "frosting".
Mix together yogurt and peanut butter until smooth. When pupcakes are cooled spread on frosting- either on top of your cupcakes or between layers of your cake.
Serve to your puppy and let them enjoy!