Substitute for Baking Powder in Banana Bread: A Simple Fix

A reliable substitute for baking powder in banana bread is a blend of baking soda and cream of tartar, which provides the base and acid that baking powder normally brings together. This banana bread uses that mixture to lift a moist, ripe-banana loaf without relying on baking powder or guessing how acidic the bananas are.

Ingredients

3 medium-large very ripe bananas, mashed (about 1 1/3 cups or 340 g)
1/2 cup (113 g) unsalted butter, melted and cooled slightly
2/3 cup (135 g) granulated sugar
2 large eggs, at room temperature if convenient
1 teaspoon (5 ml) vanilla extract
1 1/2 cups (190 g) all-purpose flour, spooned into the measuring cup and leveled
1/4 teaspoon (about 1.2 g) baking soda
1/2 teaspoon (about 1.5 g) cream of tartar
1/4 teaspoon (about 1.5 g) fine salt
2 tablespoons (30 ml) milk
1/2 cup (55 g) chopped walnuts, optional

Instructions

Heat the oven to 350°F (175°C). Grease a 9-by-5-inch (23-by-13-cm) loaf pan, then line it with a strip of parchment paper if you want to lift the loaf out easily. Let the parchment extend over the long sides as handles. Measure the flour by spooning it into the cup rather than packing it down; too much flour can make this banana bread dry and heavy.
In a medium bowl, whisk together the flour, baking soda, cream of tartar, and salt until the leaveners are evenly distributed. The baking soda and cream of tartar are the baking-powder replacement: use 1/4 teaspoon baking soda plus 1/2 teaspoon cream of tartar for each teaspoon of baking powder a recipe calls for. Keep the dry mixture ready while you prepare the wet ingredients.
In a large bowl, mash the bananas with a fork until mostly smooth, leaving a few small soft pieces if you like a more textured loaf. Whisk in the melted butter and sugar, then beat in the eggs and vanilla until combined. Stir in the milk. The mixture may look slightly separated because of the banana and melted butter; that is fine. Avoid adding extra flour to make it look like cake batter.
Add the dry ingredients to the banana mixture. Fold with a spatula just until no broad streaks of flour remain, scraping the bottom and sides of the bowl. Fold in the walnuts, if using. Do not beat the batter smooth: vigorous mixing develops gluten and can make the loaf tough. Transfer the batter to the prepared pan and spread it into the corners.
Bake on the center rack for about 60 minutes. Begin checking at 55 minutes because ovens and loaf pans vary. The top should be browned and a skewer inserted near the center should come out with a few moist crumbs, not wet batter. For food safety, check the center with a food thermometer: USDA FSIS lists 160°F (71°C) as the safe minimum for egg dishes; for a fully set quick-bread texture, the center commonly reaches about 200–205°F (93–96°C). If the top is browning too quickly before the middle is done, tent it loosely with foil and continue baking.
Set the pan on a cooling rack for 10 minutes. Run a thin knife around the edges if needed, then lift out the loaf and cool it on the rack for another 10 minutes before slicing. For neater slices, let it cool longer; warm banana bread is delicate and can compress when cut. Cooling time is included in the total time above.

Tips

Measure the leaveners accurately. Baking soda is more concentrated than baking powder, so do not swap them teaspoon for teaspoon. The soda-and-cream-of-tartar ratio in this recipe replaces one teaspoon of baking powder. Too much soda can leave a bitter or soapy taste and make the loaf rise quickly, then sink.
Mix the leavener evenly and bake promptly. Whisk the soda and cream of tartar thoroughly into the flour so you do not get concentrated pockets. Once the wet and dry mixtures meet, get the batter into the pan and oven without a long pause; this helps preserve the gas that gives the loaf lift.
Use bananas that are ripe, not spoiled. Bananas with brown-speckled skins mash easily and give the loaf plenty of flavor. If the bananas are still firm and mostly yellow, the loaf will be less sweet and less moist. Do not use fruit that is moldy or has an off smell.
Choose a substitute based on what you have. Cream of tartar is the most dependable acid for this recipe. If you have no cream of tartar, a common alternative for one teaspoon of baking powder is 1/4 teaspoon baking soda with 1 tablespoon lemon juice or vinegar mixed into the wet ingredients; reduce the milk from 2 tablespoons to 1 tablespoon. The flavor may be faintly tangier, and the batter should go into the oven right away. Baking soda alone is not a dependable replacement.

Serving Suggestions

Serve slices plain, slightly warm or at room temperature, for breakfast, a snack, or a simple dessert. A thin layer of softened butter works well when the loaf is warm; cream cheese or peanut butter makes a more substantial topping. If serving it as dessert, add a spoonful of yogurt or a small scoop of vanilla ice cream alongside the slice. The bread is naturally soft and moist, so it does not need syrup or a heavy topping.

For a brunch spread, slice the loaf after it has cooled and arrange the pieces on a platter with fresh fruit, yogurt, or another mild accompaniment. Cut thinner slices if there are several other dishes, or thicker ones when banana bread is the main baked item. If you plan to serve it to a group, let the loaf cool fully before slicing so the pieces hold their shape and do not stick together.

Variations

For a cinnamon version, add 1 teaspoon ground cinnamon (about 2.5 g) to the flour mixture. A pinch of nutmeg or cardamom can be added too, but keep the total spice modest so it does not cover the banana flavor. For a chocolate variation, fold in 1/2 cup (85 g) chocolate chips with the walnuts or use the chips instead. The added mix-ins do not change the baking-powder substitute or oven temperature.

To make the loaf without nuts, simply leave them out; there is no need to replace them. For a slightly less sweet loaf, reduce the sugar to 1/2 cup (100 g), understanding that the crumb may be a little less tender and the banana flavor may seem less pronounced. You can use whole-wheat flour for up to 1/2 cup (60 g) of the all-purpose flour, but using more may make the loaf noticeably denser. Avoid replacing all the flour unless you are following a recipe designed for that flour.

If you only have self-rising flour, it is not a direct swap for the all-purpose flour in this recipe because it already contains leavening and usually salt. Using it together with the soda-and-cream-of-tartar mixture could make the loaf rise too much or taste salty. The most predictable option is plain all-purpose flour plus the measured substitute listed here. If you have baking powder after all, use 1 teaspoon of it in place of both the baking soda and cream of tartar, not in addition to them.

Storage and Reheating

Cool the loaf completely before storing it so trapped steam does not make the crust damp. Keep it in an airtight container or wrap it well. Because this is a moist quick bread, refrigerate it within 2 hours of baking or serving. It keeps for about 3–4 days in the refrigerator. A cool room can be suitable for short-term storage, but refrigerating is the more reliable choice for keeping the loaf fresh, especially in a warm or humid kitchen.

For longer storage, wrap individual slices or the whole cooled loaf tightly and freeze for up to 3 months. Place a layer of parchment between slices if you want to take out one serving at a time. Thaw wrapped slices in the refrigerator or at room temperature, then warm them briefly if desired. To reheat a slice, use a microwave in short bursts of about 10–15 seconds, or place slices in a 300°F (150°C) oven for several minutes until warm. If reheating leftovers as a complete dish, USDA guidance is to reheat to 165°F (74°C); for an individual slice, warm it thoroughly and avoid leaving it at room temperature for extended periods.

Frequently Asked Questions

What is the best substitute for baking powder in banana bread?

For this loaf, use 1/4 teaspoon baking soda plus 1/2 teaspoon cream of tartar for every 1 teaspoon of baking powder. The soda provides the alkaline component and the cream of tartar supplies the acid. This measured combination is more dependable than baking soda on its own, since the acidity of bananas varies with ripeness and variety.

Can I use baking soda alone instead of baking powder?

It is not recommended as a straight substitution. Baking soda needs enough acid in the batter to react, and bananas do not always provide a predictable amount. Too much unreacted soda can give banana bread a soapy or bitter flavor and can affect its color. Pair it with cream of tartar or another measured acid rather than adding extra soda.

Can I use lemon juice or vinegar instead of cream of tartar?

Yes. For the amount of baking powder replaced in this recipe, use 1/4 teaspoon baking soda and 1 tablespoon lemon juice or vinegar, and reduce the milk to 1 tablespoon. Add the juice or vinegar to the wet mixture, combine it with the flour mixture, and bake the batter promptly. Lemon juice can add a light citrus note; vinegar is usually less noticeable after baking.

Will the loaf taste like cream of tartar?

No, not when the cream of tartar is measured as directed and mixed through the flour. It is used to balance the baking soda and create lift rather than to flavor the loaf. A sharp or metallic taste usually points to too much baking soda, poorly distributed leavener, or an incorrect swap.

Why did my banana bread sink in the middle?

A sunken center can mean the loaf was removed before the middle had set, the oven door was opened repeatedly early in baking, or the batter had too much leavener. Measure the soda carefully, avoid beating the batter, and check the center near the end of the bake. If the skewer shows wet batter, continue baking and tent the top with foil if it is already dark.

Can I use this replacement in any banana bread recipe?

Use the ratio to replace baking powder only when the recipe calls for it: 1/4 teaspoon baking soda plus 1/2 teaspoon cream of tartar for each teaspoon of baking powder. Do not add that mixture on top of baking soda already listed in another recipe, and do not assume it replaces every leavener in a recipe. Recipes differ in their acidity, moisture, and amount of flour, so check the original quantities and make only the needed substitution.

More recipes to cook

Safety notes: safe minimum internal temperatures from USDA FSIS; raw and undercooked fish guidance from the U.S. FDA. Food safety notes

Spotted an error? Tell us and we will correct it (corrections policy).