Step 1: Preheat the Oven: Preheat the oven to 375F (190C). Line baking sheets with parchment paper.
Step 2: Cream Butter and Sugars: In a large bowl, cream together the softened butter, granulated sugar, and brown sugar until light and fluffy. This process incorporates air into the dough, resulting in a lighter cookie.
Step 3: Add Egg and Vanilla: Beat in the egg and vanilla extract until well combined. Ensure the egg is fully incorporated for a smooth batter.
Step 4: Mix in Mashed Bananas: Stir in the mashed ripe bananas until evenly distributed. The bananas add moisture and natural sweetness to the cookies.
Step 5: Combine Dry Ingredients: In a separate bowl, whisk together the flour, baking soda, and salt. This ensures even distribution of leavening and seasoning.
Step 6: Gradually Add Dry Ingredients to Wet Ingredients: Gradually add the dry ingredients to the wet ingredients, mixing until just combined. Avoid overmixing, as this can lead to tough cookies.
Step 7: Stir in Chocolate Chips: Gently fold in the chocolate chips until evenly distributed throughout the dough.
Step 8: Drop by Rounded Spoonfuls onto Baking Sheets: Drop rounded tablespoons of dough onto the prepared baking sheets, leaving about 2 inches between each cookie. This allows for even spreading during baking.
Step 9: Bake: Bake for 12-15 minutes, or until the edges are golden brown and the centers are set. Baking time may vary depending on the oven, so monitor closely.
Step 10: Cool: Let the cookies cool on the baking sheets for a few minutes before transferring them to a wire rack to cool completely. This prevents the cookies from sticking to the baking sheets.
Optional Tips: For a richer flavor, use brown butter. Substitute chopped walnuts or pecans for half of the chocolate chips for added texture. To prevent cookies from spreading too much, chill the dough for 30 minutes before baking.