5-Ingredient Flourless Banana Bread (Recipe)
This flourless banana bread uses five ingredients: ripe bananas, eggs, peanut butter, maple syrup, and baking soda. Mix them, bake in a lined 9 × 5-inch loaf pan at 350°F, then let the loaf rest before lifting it out. Check the center, not just the browned top, for a moist crumb that has set.
Sticking, tearing, or a gummy middle can be especially frustrating after you have followed a recipe closely. With this loaf, the pan, banana moisture, and cooling time all affect the result. I troubleshoot those factors first because flourless batter sets differently from a wheat-flour loaf, and a good release begins before baking.
The method below uses a conventional oven and a manufacturer-rated 9 × 5-inch pan. It also includes checks for common problems, so you can tell whether the loaf needs more time or simply needs to cool.
Pan, Oven & Ingredient Preparation
This recipe relies on five ingredients and a correctly sized pan. Set up the oven and pan before mixing, then weigh the bananas and peanut butter if possible. Those steps help control moisture and make the bake more consistent from one loaf to the next.
Ingredients and equipment
- 360 g peeled very ripe bananas, about 3 medium
- 100 g beaten egg, about 2 large eggs without shells
- 250 g smooth peanut butter
- 60 mL maple syrup, ¼ cup
- 5 g baking soda, 1 level teaspoon
Use a manufacturer-rated 9 × 5-inch (23 × 13 cm) loaf pan. Light-colored aluminum transfers heat evenly and is a reliable choice. Glass, ceramic, silicone, and nonstick pans may bake differently; check the maker’s oven-use and temperature limits rather than assuming they behave like metal.
Position an oven rack in the center and preheat the oven to 350°F (177°C). Do not preheat the empty pan. Line it with parchment paper, leaving enough overhang on the long sides to lift out the loaf. A small amount of ordinary oil can help hold the paper in place.
Very ripe bananas should be soft and easy to mash. Their sweetness and softness suit this batter, but weigh the peeled fruit: banana size varies, and too much banana adds moisture that can leave the center gummy. Avoid adding extra ingredients if you want the five-ingredient formula to stay consistent.
| Preparation choice | Recommended approach | Why it matters |
|---|---|---|
| Pan size | 9 × 5 in (23 × 13 cm) | A different size changes batter depth and bake time |
| Pan lining | Parchment with overhang | Helps lift the loaf without pulling at its sides |
| Banana amount | 360 g peeled | Controls moisture in a flourless batter |
| Oven setup | Center rack; 350°F | Gives the loaf a steady, even bake |
Key step: Measure the peeled banana and prepare the pan before you combine the ingredients. Once the baking soda is mixed in, transfer the batter to the oven promptly.
Mixing, Baking & Doneness
This loaf has no wheat flour, so its structure comes mainly from egg proteins, peanut solids, and the banana mixture as they heat and set. The batter will be thick but moist. Mix until even, bake in the prepared pan, and use a center check rather than crust color alone to judge doneness.
Mash the bananas until mostly smooth. Whisk in the beaten eggs, peanut butter, and maple syrup until the mixture looks uniform. Add the baking soda last and mix just until it is distributed. Scrape the batter into the pan and level the top.
Bake for 45 minutes before checking. A typical total bake is 45–55 minutes, though the pan material and oven can affect timing. If the top is browning before the middle is set, lay foil loosely over the top. Do not press the foil onto the batter.
For the most useful check, insert a calibrated food thermometer into the center without touching the pan. Aim for about 200–205°F (93–96°C). A tester inserted near the center should also come out without wet batter. A few moist crumbs may cling to it; raw-looking batter means the loaf needs more time.
| What you notice | What to do |
|---|---|
| Top is dark, center is below 200°F | Loosely tent with foil and continue baking |
| Center is in the target range, tester has no wet batter | Remove the pan from the oven |
| Tester shows wet batter or center is below target | Bake a few minutes more, then check again |
| Batter seems unusually loose before baking | Recheck banana weight and ingredient amounts |
In my troubleshooting work, a browned top can make an underbaked center easy to miss. That is why I recommend checking both temperature and texture. Oven color varies, and the crust cannot show you whether the middle has set.
Key step: Start checking at 45 minutes, but let the center’s temperature and the tester guide the final decision.
Cooling, Release & Pan Care
Cooling is part of the bake, not an optional pause. As the loaf rests, its hot center loses heat and the crumb firms. Give it 15 minutes in the pan, then lift it by the parchment and cool it fully on a rack before slicing.
Set the pan on a heat-safe surface after baking. Leave the loaf in the pan for 15 minutes; removing it at once can make the soft sides or base break. After the rest, hold the parchment overhang and lift steadily. If the loaf resists, ease the paper away from the sides rather than pulling hard on the bread.
The center can feel soft while hot and become more stable as it cools. That does not mean every soft center is properly baked: use the temperature and tester checks first. Cooling cannot fix a center that still contains wet batter.
Practical troubleshooting examples
- The loaf breaks while being lifted: It may have been removed too soon, or the center may not have finished setting. Let the pan rest for the full 15 minutes next time and check the center temperature before removing it from the oven.
- The center seems gummy after cooling: Check that you used 360 g banana and the specified pan size. Too much fruit, a pan that spreads the batter more thinly, or an early oven removal can affect the crumb.
- The sides stick despite the parchment: Check that the paper reaches the sides and has enough overhang. For the next loaf, lightly grease the pan to help the parchment stay in place.
Once the pan has cooled, wash it with warm water and mild detergent, then dry it. Do not pour cold water onto a hot metal pan. Sudden temperature changes can damage cookware. Likewise, do not set hot glass or ceramic bakeware on a cold or wet surface; follow its maker’s thermal-shock guidance.
For nonstick bakeware, avoid aerosol cooking spray. Residue can build up and impair release. Use parchment or a small amount of ordinary oil instead, while following the pan maker’s care directions.
Key step: Rest in the pan for 15 minutes, lift with the parchment, and cool completely before cutting.
Slicing, Serving & Storage
A fully cooled loaf is easier to cut cleanly than a warm one. Use a serrated knife and a gentle sawing motion, especially through the soft center. Store the bread covered once cool; because this recipe makes a moist, egg-based loaf, refrigeration is a sensible choice for keeping leftovers.
Wait until the loaf is cool throughout before wrapping it. Trapping warmth can create condensation, which makes the surface damp. For tidy slices, wipe the knife between cuts if banana or peanut butter sticks to the blade.
Serve the bread plain or with a topping of your choice. If you want to freeze it, slice the cooled loaf and wrap portions well so you can thaw only what you need. Thaw in the refrigerator or at room temperature, and check the texture before serving.
| Storage method | How to handle it |
|---|---|
| Same day | Keep covered after the loaf has cooled |
| Refrigerated leftovers | Store covered and use within 3–4 days |
| Freezing | Wrap cooled slices well; thaw before serving |
If a refrigerated slice feels firm, let it sit briefly at room temperature before eating. Avoid judging the final texture while the loaf is still warm from baking; the crumb changes as it cools.
Key step: Cool before wrapping, and cut only what you plan to serve.
Frequently Asked Questions
Can I make this banana bread without flour?
Yes. This recipe contains no flour. Eggs, peanut butter, and banana form the loaf’s structure as it bakes.
What are the five ingredients?
Use 360 g peeled banana, 100 g beaten egg, 250 g smooth peanut butter, 60 mL maple syrup, and 5 g baking soda.
Can I use crunchy peanut butter?
Smooth peanut butter is specified for an even batter. Crunchy peanut butter may change the texture, so the result may not match the recipe as written.
How ripe should the bananas be?
Use very ripe, soft bananas that mash easily. Weigh 360 g after peeling so the batter has the intended amount of fruit.
How long does flourless banana bread bake?
Begin checking at 45 minutes. The typical range is 45–55 minutes, but pan material and oven performance can change the time.
How do I know the center is done?
Aim for about 200–205°F (93–96°C) in the center with a calibrated thermometer. A tester should come out without wet batter.
Why is my banana bread gummy in the middle?
Common causes include too much banana, an oversized pan, or removing the loaf before the center sets. Check the banana weight, pan size, and center temperature.
Can I remove it from the pan right away?
No. Rest it in the pan for 15 minutes, then lift it by the parchment. Removing it while very hot can cause it to break.
Can I use a glass or ceramic loaf pan?
Only if the pan is rated for the oven temperature. Materials can bake differently, and safe temperature limits vary by manufacturer.
Can I use cooking spray on a nonstick pan?
Avoid aerosol cooking spray on nonstick bakeware because residue can build up. Parchment or a small amount of ordinary oil is a better option.
(This article was written by one of our staff writers, Andrew P. Morrison. Visit our Meet the Team page.)
