Preheat your oven to 350 degrees. Spray a mini muffin tin with cooking spray or use cupcake liners.

In a small bowl, sift together the flour, baking powder and salt. Set aside.

In the bowl of your stand mixer, cream together the butter and sugar until fluffy. Add the eggs, one at a time, until well mixed. Add the applesauce, bananas and peanut butter individually, mixing well after each addition.

Add the flour mixture in slowly, making sure the flour is well blended before adding more. Stir in the chocolate chips by hand.

Fill the muffin tins about 3/4 of the way full - I used my tablespoon measuring spoon to scoop the dough & fill the tins somewhat evenly.

Bake for 14-16 minutes, or until a toothpick inserted into the center of a muffin comes out relatively clean (there will be some melted chocolate).

Let cool for a minute or two in the pan & then remove to a wire rack to cool completely.