Common Ingredient Substitutions
Out of an ingredient mid-recipe? Most kitchen substitutions work, but each one changes the result slightly. Here are the most common swaps with what to expect.
Egg substitutes
Eggs serve different roles: binding, leavening, moisture, structure. Different substitutes match different roles.
| Substitute (per 1 large egg) | Best for | Notes |
|---|---|---|
| 1 tbsp chia + 3 tbsp water (rest 5 min) | Binding (cookies, brownies) | Vegan, adds fiber, slight texture difference |
| 1 tbsp ground flaxseed + 3 tbsp water (rest 5 min) | Binding (muffins, pancakes) | Vegan, nutty flavor, slight color tint |
| 1/4 cup unsweetened applesauce | Moisture (cakes, quick breads) | Adds slight sweetness; reduce sugar 1-2 tbsp |
| 1/4 cup mashed banana | Moisture + binding (muffins) | Banana flavor; only for compatible flavors |
| 1/4 cup silken tofu (blended) | Custards, dense cakes | Neutral flavor, smooth texture |
| 3 tbsp aquafaba (chickpea liquid) | Whipping (meringues) | Vegan whipped peaks; whip like egg whites |
Butter substitutes
| Substitute (per 1 cup) | Best for | Notes |
|---|---|---|
| 3/4 cup vegetable oil | Cakes, brownies | No creaming method; denser, moister result |
| 1 cup margarine | Most baking | 1:1 swap, less buttery flavor |
| 1 cup coconut oil (solid form for creaming) | Vegan baking | Subtle coconut taste; chill before use |
| 1 cup unsweetened applesauce | Reducing fat (muffins, brownies) | Cuts calories; spongier texture |
| 1 cup Greek yogurt | Cakes only | Reduces fat; tangier flavor; more tender |
Milk substitutes
- Almond milk, oat milk, soy milk: 1:1 swap. Almond and oat work best for baking due to neutral flavor.
- Coconut milk: 1:1 but adds coconut flavor and fat. Good for tropical-flavored bakes.
- Water + butter (per 1 cup milk): 1 cup water + 1 tbsp melted butter. Lower richness but works in emergencies.
- Powdered milk reconstituted: 1/4 cup milk powder + 1 cup water = 1 cup milk.
Buttermilk substitute (DIY)
The most useful kitchen hack. Per 1 cup buttermilk needed:
- 1 cup whole milk + 1 tbsp lemon juice — let stand 5 minutes until curdled.
- 1 cup whole milk + 1 tbsp white vinegar — same method, slightly less tang.
- 3/4 cup plain yogurt + 1/4 cup milk — closest to real buttermilk in texture and flavor.
See our buttermilk ingredient page for full details.
Flour substitutes
The trickiest substitution category — gluten content and absorbency vary widely.
| Substitute (per 1 cup AP flour) | Best for | Notes |
|---|---|---|
| 1 cup cake flour + 2 tbsp | Cookies, dense cakes | Lower protein needs adjustment |
| 7/8 cup bread flour + 2 tbsp cornstarch | Tender cakes from bread flour | Cornstarch lowers effective protein |
| 3/4 cup whole wheat + 1/4 cup AP | Healthier bread/muffins | Add 1-2 tbsp extra liquid |
| 1 cup gluten-free 1:1 blend | GF baking | Use commercial blends; DIY mixes are tricky |
Sugar substitutes
- 1 cup granulated sugar = 1 cup brown sugar — adds molasses flavor + extra moisture
- 1 cup granulated sugar = 3/4 cup honey + reduce other liquid by 1/4 cup, lower oven temp 15°C — honey browns faster
- 1 cup granulated sugar = 3/4 cup maple syrup + reduce liquid by 3 tbsp — adds maple flavor
- Confectioners' sugar from granulated: blend 1 cup granulated + 1 tbsp cornstarch in food processor until fine
Baking powder ↔ baking soda
They're NOT interchangeable directly, but you can substitute with adjustments:
- 1 tsp baking powder = 1/4 tsp baking soda + 1/2 tsp cream of tartar + 1/4 tsp cornstarch
- 1/4 tsp baking soda = 1 tsp baking powder + omit any acid in recipe (since baking powder is self-acting)
Cornstarch substitutes
- 1 tbsp cornstarch = 2 tbsp all-purpose flour — for thickening sauces (less glossy result)
- 1 tbsp cornstarch = 1 tbsp arrowroot — same thickening power, glossier finish
- 1 tbsp cornstarch = 2 tbsp tapioca starch — chewier texture, glossy
When NOT to substitute
Some recipes are sensitive enough that substitution will fail:
- Macarons — egg whites are critical; aquafaba can work but technique differs significantly
- Yeasted breads — substituting flour types changes hydration and rise dramatically
- Crème brûlée and custards — egg-yolk-specific recipes
- Croissants and laminated dough— butter's fat content is precise; oil/margarine won't work