The most dependable substitute for 1 teaspoon of baking powder in cookies is 1/4 teaspoon baking soda plus 1/2 teaspoon cream of tartar. This small-batch sugar cookie recipe uses that blend, so you can bake tender, lightly crisp cookies without baking powder; the cream of tartar supplies the acid the baking soda needs to work.
Ingredients
- 2 cups (250 g) all-purpose flour, fluffed and spooned into the measuring cup
- 1/4 teaspoon (about 1 g) baking soda
- 1/2 teaspoon (about 1.5 g) cream of tartar
- 1/4 teaspoon (1.5 g) fine salt
- 3/4 cup (150 g) granulated sugar, plus 2 tablespoons (25 g) for rolling
- 3/4 cup (170 g) unsalted butter, softened but not melted
- 2 tablespoons (30 ml) milk, preferably at room temperature
- 1 teaspoon (5 ml) vanilla extract
Instructions
- Prepare the oven and trays. Set a rack in the center of the oven and preheat to 350°F (175°C). Line two baking sheets with parchment paper. If you have only one sheet, bake in two batches and let the sheet cool before loading it again; dough placed on a hot tray may spread too much.
- Mix the dry ingredients. In a medium bowl, whisk together the flour, baking soda, cream of tartar, and salt until the leaveners are evenly distributed. Breaking up any little lumps matters here because the quantities are small and an unmixed pocket of baking soda can leave a bitter or soapy-tasting spot.
- Cream the butter and sugar. In a larger bowl, beat the softened butter with 3/4 cup sugar for about 2 minutes, until creamy and a little lighter in color. A hand mixer on medium speed works well; by hand, use a sturdy wooden spoon and press the mixture against the bowl as you stir. Do not beat until very fluffy: excess air can make egg-free cookies fragile.
- Finish the dough. Beat in the milk and vanilla until the mixture looks smooth. Add the flour mixture in two additions, stirring on low speed or by hand just until no dry flour remains. The dough should be soft and scoopable, not wet or pourable. Scrape the bowl once so the butter and flour are evenly combined.
- Chill and portion. Cover the bowl and refrigerate the dough for 30 minutes. This firms the butter and makes the dough easier to roll, while helping the cookies hold their shape. Put the remaining 2 tablespoons sugar in a small bowl. Scoop rounded tablespoons of dough, roll them gently into balls, then roll each ball in sugar. Arrange them about 2 inches (5 cm) apart on the prepared sheets.
- Bake in batches. Bake one sheet at a time for 10 to 12 minutes, until the edges look set and the bottoms are just lightly golden. The tops may still look pale; they will firm as they cool. Avoid waiting for deep browning, which can make these small cookies dry. Bake the second sheet for another 10 to 12 minutes.
- Cool before serving. Leave the cookies on the sheet for 5 minutes, then move them to a wire rack to cool completely. They are delicate while hot but become easier to handle as the butter sets. If the centers seem soft, give them a few more minutes on the tray rather than putting them back in the oven immediately.
Tips
- Keep the ratio precise. For each 1 teaspoon of baking powder called for in a cookie recipe, use 1/4 teaspoon baking soda and 1/2 teaspoon cream of tartar. Baking soda is more concentrated than baking powder, so replacing powder with the same amount of soda is not a safe one-for-one swap. Too much soda can make cookies spread quickly and taste unpleasantly alkaline.
- Whisk the leaveners thoroughly. Cream of tartar and baking soda need to be spread throughout the flour. Whisking the dry mixture well, or sifting it if either ingredient is lumpy, helps every cookie rise and brown evenly. Do not sprinkle the two powders directly into wet dough; they can clump before they are distributed.
- Measure flour lightly. Scooping straight from a compacted flour bag can pack too much into a cup and make the cookies dry or crumbly. Fluff the flour, spoon it into the measuring cup, and level it, or weigh 250 g. If the dough still feels stiff after mixing, add milk 1 teaspoon (5 ml) at a time rather than pouring in extra liquid all at once.
- Do not use baking soda by itself. Baking soda needs an acid to produce carbon dioxide, which helps the dough rise. Cream of tartar is a convenient dry acid for this recipe. Lemon juice or vinegar can provide acid in some recipes, but they add liquid and flavor, so they are less predictable in cookies unless the full recipe is adjusted.
Serving Suggestions
Serve these cookies once they have cooled enough to hold their shape, with coffee, tea, or a glass of milk. Their mild vanilla flavor and gently crisp edges make them suitable for an everyday snack or a simple dessert plate. For a neat presentation, arrange them in a single layer on a platter and add a little extra granulated sugar to the tops before baking, if you like a more sparkling finish.
For an ice-cream sandwich, let the cookies cool completely and use a small scoop of firm ice cream between two cookies. Press gently so they do not crack, then serve right away or freeze the assembled sandwiches. You can also crumble a cookie over a bowl of fruit or pudding just before serving; adding the crumbs at the last moment keeps them from turning soft.
Variations
Cinnamon sugar cookies: Mix 1 teaspoon ground cinnamon into the 2 tablespoons (25 g) of rolling sugar. This gives the cookies a warm, snickerdoodle-like coating. The recipe already uses cream of tartar, which lends a subtle tang, but these are still simple sugar cookies rather than a claim to one definitive regional or family version.
Citrus cookies: Add 1 teaspoon finely grated lemon or orange zest with the butter and sugar. Use only the colored outer peel, not the bitter white pith. The citrus gives the cookies a fresh aroma without changing the dry-to-wet balance of the dough.
Chocolate chip cookies: Fold in 1/2 cup (85 g) mini chocolate chips after the flour is mixed in. Mini chips distribute more evenly in this small batch than large chunks and make the dough easier to portion. If you add a larger amount of mix-ins, the cookies may be more fragile, so keep them on the baking sheet for the full 5-minute cooling period.
No cream of tartar available: If your original cookie recipe includes another acidic ingredient, such as buttermilk or yogurt, a baking-soda substitution may be possible, but the amount depends on the recipe and its liquid balance. Do not add an arbitrary splash of vinegar or lemon juice to this dough; it can make the texture unpredictable. If you have self-rising flour, it already contains leavening and salt, so it is not a direct replacement for plain flour plus this leavener blend. Follow a recipe specifically written for it instead.
Storage and Reheating
Let the cookies cool completely, then store them in an airtight container. Refrigerate within 2 hours of baking and use within 3 to 4 days. Chilling can make the butter firm and the cookies seem less tender, so bring only the portion you plan to serve to room temperature for about 15 to 20 minutes. Keep them away from uncovered foods in the refrigerator so they do not absorb other odors.
For longer storage, freeze cooled cookies in a freezer-safe airtight container for up to 2 months, with parchment between layers to prevent sticking. Thaw them at room temperature for about 30 minutes. If you prefer them warm, heat a cookie in a 300°F (150°C) oven for 3 to 4 minutes, then let it sit briefly before eating; microwaving can soften it unevenly. The raw dough can also be portioned and frozen on a tray, then transferred to a sealed container. Bake the frozen dough balls directly, adding about 1 to 2 minutes and checking for set edges.
Frequently Asked Questions
Can I replace baking powder with baking soda alone?
No, not in a recipe that does not already contain enough acid. Baking soda needs an acid such as cream of tartar to release gas and help the cookies rise. Without it, the cookies may spread poorly and can taste bitter or soapy. Use the stated 1/4 teaspoon baking soda plus 1/2 teaspoon cream of tartar for each teaspoon of baking powder.
Will the cookies taste like cream of tartar?
At the small quantity used here, the flavor should be subtle, with a slight tang that balances the sugar. It should not taste sharp or sour. If the cookies taste strongly metallic, bitter, or soapy, check that the baking soda was measured correctly and that the dry ingredients were thoroughly mixed.
Can I use this ratio in every cookie recipe?
It is a useful starting point for replacing 1 teaspoon of baking powder, but recipes vary in their other acidic ingredients, liquid, and intended texture. If the original recipe already contains an acidic ingredient, adding cream of tartar may make the dough more acidic than intended. For the most reliable result, use the replacement in a recipe with no other major changes, then adjust only after seeing how that particular dough bakes.
Why did my cookies spread too much?
Butter that was melted or very soft, a warm baking sheet, insufficiently chilled dough, or too little flour can all encourage spreading. Measure the flour accurately, chill the dough for the full 30 minutes, and use a cool tray for each batch. Also check that you did not use more baking soda than specified; it is not interchangeable by volume with baking powder.
Can I make the dough ahead?
Yes. Cover and refrigerate the mixed dough for up to 24 hours, then let it sit for a few minutes if it is too firm to scoop. You can also freeze portioned dough balls in a sealed container. Bake them from frozen and check near the end of the usual baking window, since the centers may need an extra minute or two to set.
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