01 - 
                Set the oven to 350°F (177°C). Cover the base and sides of an 8x8 inch pan with parchment paper.
              
              
              
                02 - 
                Heat butter in the microwave until it’s liquefied, about a minute. Let it cool for 10-15 minutes until it feels warm but not hot.
              
              
              
                03 - 
                In a bowl, blend together the flour, salt, and baking powder.
              
              
              
                04 - 
                Whisk melted butter with brown sugar. Stir in the egg, mashed banana, and vanilla until smooth.
              
              
              
                05 - 
                Slowly add dry ingredients into the wet mixture while stirring. Mix in most of the chocolate chips, keeping a handful for the top.
              
              
              
                06 - 
                Pour the mix into the pan and sprinkle the reserved chips on top. Bake for 30-35 minutes, checking with a toothpick to make sure the middle is cooked.
              
              
              
                07 - 
                Once completely cooled, lift out the dessert using the parchment. Slice into portions.