Quick Recipe Finder is a participant in the Amazon Services LLC Associates Program. If you buy through links on this page we may earn a commission, at no extra cost to you. Cooking times are guidance and vary by appliance. Always confirm doneness with a thermometer against USDA safe minimum internal temperatures.
Choosing the right milk substitute for baking depends on what the milk is actually doing in that batter, not just on what happens to be in the fridge. A cake needs moisture and a little protein for structure. A biscuit needs acid for lift. A custard needs fat to set. Grabbing whatever liquid is closest at hand without matching it to the job is the most common cause of a flat cake or a loose custard.
Quick answer: For most baking, swap milk 1:1 with a plant milk or with evaporated milk diluted 1:1 with water. For biscuits and quick breads that call for buttermilk, use 1 cup milk plus 1 tablespoon lemon juice or vinegar, rested 5 to 10 minutes. For custards, undiluted evaporated milk gives the richest, most stable set.
| Bake Type | Best Substitute | Ratio | Texture Result | Common Failure |
|---|---|---|---|---|
| Yellow or white cakes | Whole milk or unsweetened plant milk | 1 cup for 1 cup | Light, even crumb | Thin plant milk gives a flatter rise and paler crust |
| Pound and butter cakes | DIY buttermilk | 1 cup milk + 1 Tbsp lemon juice or vinegar, rest 5-10 min | Denser, tangy, tender crumb | Skipping the rest leaves the milk unclabbered and the batter too wet |
| Quick breads (banana, zucchini) | Water + melted butter | 1 cup water + 2 Tbsp melted butter | Moist but slightly less rich | Too much added butter leaves a greasy, sunken center |
| Yeast breads | Water + butter, or plant milk | 1 cup water + 1 Tbsp melted butter | Chewier crust, less tender crumb | Leaving out the fat entirely makes the crumb tough and dry |
| Biscuits and scones | Buttermilk, dairy or plant-based | 1 cup plant milk + 1 Tbsp acid, rest 5-10 min | Flaky layers, proper rise | Using plain sweet milk instead of acidic milk gives a dense, flat biscuit |
| Custards, puddings, flan | Evaporated milk, undiluted | 1:1 swap for whole milk | Richer, firmer set | Over-diluting with water means the custard never fully sets |
| Pancakes and waffles | Any 1:1 swap, plant milk or diluted evaporated milk | 1 cup for 1 cup | Similar texture to dairy version | Thin batter spreads too much and undercooks in the center |
Milk Substitute for Baking by Bake Type
The table above is the short version. Here is what is actually happening in each category, so you can adjust when a recipe does not match one of these rows exactly.
Cakes
Most cake recipes use milk purely for liquid and a little fat, so a straight 1:1 swap with any unsweetened plant milk usually works fine. Soy milk is the closest match to dairy in protein and fat, which matters for browning and crumb strength. Almond and rice milks are thinner and can leave a slightly flatter, paler cake, so some bakers add a tablespoon of melted butter per cup to compensate. For a side-by-side on which plant milk performs best for which job, see our dairy free milk substitute guide.
Breads
Yeast breads and quick breads tolerate water in place of milk better than cakes do, because the gluten structure does most of the work. Water plus a tablespoon or two of melted butter per cup of milk called for keeps the crumb from drying out. Breads made with plain water and no added fat will still rise, but the crumb tends to be chewier and less tender, and the crust browns less.
Biscuits and Pastry
Biscuits, scones, and any recipe that leans on baking soda for lift need an acidic liquid to react with it. This is why buttermilk substitutes matter more here than almost anywhere else in baking. A dairy or plant-based milk soured with vinegar or lemon juice gets you most of the way there. If your base milk is a plant milk, the exact dilution and rest time change slightly by milk type, which is covered in detail in our dairy free buttermilk substitute ratios post.
Custards and Puddings
Custards are the least forgiving category because they depend on milk fat and protein to set properly alongside the eggs. Undiluted evaporated milk, which is roughly 60 percent of the water removed from whole milk, gives a richer and more stable custard than a diluted substitute. Plant milks work but tend to produce a softer, less sliceable set, so plan to add an extra egg yolk or a bit more cornstarch if you go that route. Since the eggs are doing as much structural work as the milk in a custard, it is worth checking our egg substitute ratio matrix if you are adjusting both at once. The USDA Food Safety and Inspection Service lists 160°F as the safe minimum internal temperature for egg-based dishes; many baked custards target a slightly higher 170°F to 175°F range for a firmer, sliceable set, which is a texture choice rather than a safety floor. Confirm either number with a instant-read thermometer rather than relying on visual cues alone, since those are easy to misread.
What Changes the Number
- Fat content of the original milk. A recipe written for whole milk will come out leaner with skim or a low-fat plant milk unless you add back a bit of butter or oil.
- Protein content of the substitute. Soy milk is closest to dairy in protein, which affects browning and how well a batter holds air. Oat and rice milks are lower in protein and can leave a softer crumb.
- Whether the recipe needs acid. If baking soda appears in the ingredient list without baking powder, the recipe is counting on an acidic liquid. Swapping in plain milk instead of buttermilk can leave a flat, soapy-tasting bake.
- Recipe size and ratios. Doubling a batch does not always double the exact liquid-to-acid balance cleanly, so measure substitutes by volume rather than eyeballing. A basic liquid measuring cup is worth keeping next to the mixing bowl for this kind of swap.
- Oven and appliance variance. Actual bake times shift by oven model and pan material regardless of which milk substitute you use, so treat any stated bake time as a starting point and confirm doneness with a toothpick, thermometer, or jiggle test rather than the clock alone.
Common Mistakes
- Grabbing sweetened or flavored plant milk by accident. Vanilla or chocolate almond milk will change the flavor of a savory bread or a plain biscuit.
- Skipping the 5 to 10 minute rest when making DIY buttermilk. The acid needs time to thicken the milk slightly before it goes into the batter.
- Using water with no added fat in a cake recipe that was written for whole milk. The result is usually dry and pale rather than evenly moist.
- Adding undiluted evaporated milk to a cake batter that expects regular milk. It is thicker and richer than whole milk, and using it straight can make the batter too dense.
- Forgetting that custards are the most sensitive category. A substitute that works fine in a muffin can leave a flan or pudding that never fully sets.
FAQ
Can I use water instead of milk in baking?
Yes, for breads and many quick breads, as long as you add back a little fat, usually a tablespoon or two of melted butter per cup of milk called for. For cakes and custards, water alone tends to produce a flatter, less rich result because it is missing both the fat and the protein that milk contributes.
What is the best milk substitute for a cake recipe?
An unsweetened plant milk or whole dairy milk swapped 1:1 works for most cake recipes. Soy milk is the closest nutritional match to dairy and tends to perform most predictably in terms of rise and browning.
Does almond milk work the same as whole milk in baking?
Not exactly. Almond milk is thinner and lower in fat and protein than whole milk, so cakes can come out slightly flatter and paler. It still works as a 1:1 liquid swap, just with a minor texture tradeoff, which is covered in more depth in our plant milk by job guide.
Can I substitute evaporated milk for milk 1:1?
Dilute evaporated milk with an equal amount of water first, then use that mixture 1:1 for regular milk. For custards and puddings, skip the dilution and use evaporated milk undiluted for a richer, firmer set.
Practical Recommendation
Match the substitute to the job rather than defaulting to the same swap every time. Use plant milk or diluted evaporated milk for cakes, breads, and pancakes. Reach for a soured buttermilk substitute whenever baking soda is doing the leavening. Save undiluted evaporated milk for custards and puddings where richness and set matter most. When in doubt, check the recipe for baking soda in the ingredient list before deciding whether you need an acidic substitute or just a liquid one.