1Combine the three ripe mashed bananas, 1/4 cup of any nut butter, 1/4 cup of melted regular butter, 3 tablespoons of maple syrup, 2 eggs, and a teaspoon of vanilla extract in a bowl.
2Mix all the wet ingredients together.
3Add a 1/2 cup of unsweetened cocoa powder, a 1/2 teaspoon of baking soda, and a pinch of salt to the mixture.
4Mix all ingredients together until well combined.
5Pour the batter into a brownie pan or muffin tin.
6Sprinkle chocolate chips on top.
7Bake for about 15-20 minutes at 350 degrees Fahrenheit.