Ultra-Moist Chocolate Chip Banana Bread Step-by-step instructions

Before you start

Before starting, pull the butter and egg out of the refrigerator so they come to room temperature — this helps them blend more smoothly with the other wet ingredients. Measure out all your ingredients and have them ready.

Preheat the oven to 350°F (175°C) and position a rack in the center. Line a 9x5-inch loaf pan with parchment paper, leaving overhang on the long sides for easy lifting. Mash the bananas in a large bowl; they should be very ripe, with brown spots, for maximum sweetness and moisture.

Instructions

Mixing the Batter

1. 1Mash and mix wet ingredients
   Preheat the oven to 350°F (175°C). Line a 9x5-inch loaf pan with parchment paper, leaving overhang on the long sides. In a large bowl, mash the ripe bananas with a fork until mostly smooth. Add the melted butter, egg, brown sugar, granulated sugar, and vanilla bean paste. Stir until well combined.
   Look for The mixture should be glossy and well blended, with no streaks of egg or butter.
   Tip Use very ripe bananas with brown spots for the most flavor and natural sweetness.
2. 2Add sour cream and dry ingredients
   Stir in the sour cream until fully incorporated. Sprinkle the flour, baking soda, and salt over the wet mixture. Fold gently with a rubber spatula until just combined — a few streaks of flour are fine. Do not overmix or the bread will be tough.
   Look for The batter should be thick and slightly lumpy, with no dry pockets of flour.
   Tip Overmixing develops gluten, which can make the bread dense. Stop as soon as the flour disappears.

After this phase, the batter should be thick, glossy, and well blended. The wet ingredients should be fully combined, and the dry ingredients folded in just until no dry streaks remain. The batter will be slightly lumpy from the bananas, and the chocolate chips should be evenly distributed.

It should smell sweet and buttery, with a strong banana aroma. The consistency should be like a thick cake batter — not too runny, not too stiff. If you press a spatula through it, it should leave a trail that slowly disappears.

Filling the Pan

3. 3Fold in chocolate chips
   Fold in the 1 cup of chocolate chips until evenly distributed throughout the batter. The chips should be well dispersed but not crushed.
   Look for Chocolate chips should be visible throughout the batter, not clumped in one spot.
   Tip Reserve a few chips to press on top for a prettier finish, if desired.
4. 4Fill the loaf pan
   Pour the batter into the prepared loaf pan and smooth the top with a spatula. Press the halved banana lengthwise into the top of the batter, cut side up. Sprinkle the extra chocolate chips over the top, gently pressing them in.
   Look for The batter should fill the pan about three-quarters full; the banana halves will sink slightly during baking.
   Tip Pressing the banana into the batter helps it stay on top rather than floating up.

The batter should fill the loaf pan about three-quarters full. The top should be smooth, with the banana halves pressed gently into the surface. The extra chocolate chips should be scattered evenly, creating a visually appealing pattern. The batter should be level, not mounded in the center. At this point, the kitchen should smell of banana and chocolate, and the pan should feel heavy. Before baking, double-check that the oven is preheated and the rack is in the center position.

Baking and Cooling

5. 5Bake until caramelized and set
   Bake at 350°F (175°C) for 55 minutes, or until the top is deeply golden brown and caramelized, and a skewer inserted into the center comes out with a few moist crumbs (no wet batter). If the top browns too quickly, tent loosely with foil for the last 15 minutes.
   Look for The bread should be tall, with a crackly golden crust and a skewer that comes out with moist crumbs, not raw batter.
   Safe temperature 160°F (71°C) internal temperature (egg dishes)
   Tip Start checking at 50 minutes; ovens vary. The internal temperature of the bread should reach 200°F (93°C) for a fully baked center.
6. 6Cool and slice warm
   Let the bread cool in the pan on a wire rack for 15 minutes. Then lift it out using the parchment overhang and transfer to a cutting board. Slice while still warm to see the melted chocolate pools, or let cool completely for cleaner slices.
   Look for The bread should be firm enough to slice without crumbling, with a moist, tender crumb.
   Tip For the best texture, wait at least 15 minutes before slicing; the bread continues to set as it cools.

After 55 minutes, the loaf should be tall and golden brown, with a caramelized, slightly crackly top. The banana halves on top should be soft and deeply browned. A skewer inserted into the center should come out with moist crumbs, not raw batter. The kitchen will be filled with the warm aroma of banana and chocolate. After cooling for 15 minutes, the bread should be firm enough to lift out of the pan using the parchment overhang. The bottom should be golden and the sides cleanly released.

Common mistakes

Overmixing the batter is the most common mistake — it develops gluten and makes the bread tough. Mix until the flour is just incorporated, leaving a few streaks. Another issue is using under-ripe bananas, which lack sweetness and moisture; wait until they’re heavily spotted.

Also, don’t open the oven door during the first 40 minutes of baking, as the temperature drop can cause the bread to sink in the middle. If the top browns too quickly, tent with foil rather than lowering the oven temperature.

How to tell it’s done

The banana bread is done when the top is deeply golden brown and caramelized, and a skewer inserted into the center comes out with a few moist crumbs attached, but no wet batter. The internal temperature should read 200°F (93°C) on an instant-read thermometer.

If the top browns too quickly, tent loosely with foil during the last 15 minutes of baking. Remember that the bread continues to cook slightly as it cools, so it’s better to err on the side of slightly underdone than overbaked, which can dry it out.

• Egg dishes: 160°F (71°C) in the thickest part