Step 1

Preheat the oven to 350F degrees.

Step 2

Line a 9x13 inch pan with parchment leaving an overhang around the sides. Or line with aluminum foil and lightly grease.

Step 3

Add the butter and sugar to a large bowl. Microwave for 1 minute on medium power, then remove from the microwave and stir. Repeat the process until the butter is melted.

Step 4

Whisk in the eggs and vanilla extract, followed by the mashed bananas.

Step 5

Gently stir in the flour, cocoa powder, and salt.

Step 6

Stir in the chocolate chips.

Step 7

Pour/spoon the batter into the prepared pan and bake for 35-40 minutes, or until an inserted toothpick comes out clean or with a few damp crumbs.

Step 8

Cool fully (about 4 hours), then slice. Store brownies in an airtight container in the fridge for up to 4 days.