Why Did My Cheesecake Crack

A baked cheesecake is a custard, and like any custard it is unforgiving of high heat. When the eggs overcook, the filling tightens and shrinks. If the edges are stuck to the pan, or the outside has set much harder than the middle, that shrinking tears the surface open. Most cracks appear either late in baking or during the first hour of cooling.

Preventing them is about gentle treatment at every stage: mixing without whipping, baking with low and humid heat, stopping while the center still wobbles, and cooling slowly. And if a crack shows up anyway, there are good ways to cover it that look intentional.

How a cheesecake cracks

Eggs set as they heat. Baked gently, they hold the cream cheese in a smooth, creamy gel. Baked too long or too hot, the proteins tighten, push out moisture and shrink. The center of the cake shrinks most, and the surface splits to accommodate it.

Air beaten into the batter makes things worse. Those tiny bubbles expand in the oven, puffing the cake up like a soufflé, and then collapse as it cools, dragging the top downward. And if the sides of the cake are glued to the pan, the shrinking filling has nowhere to go and splits down the middle.

• Overbaking or too-hot oven
• Overbeaten batter full of air
• Filling stuck to the sides of the pan
• Sudden temperature change during cooling

Mixing for a smooth, dense batter

Let cream cheese, eggs and sour cream sit out for about an hour so they are cool room temperature. Cold cream cheese stays lumpy, which tempts you to beat harder. Use a paddle attachment on low speed and beat the cream cheese with the sugar until perfectly smooth, scraping the bowl and paddle well.

Add the eggs one at a time on low and mix only until each one disappears. If the batter looks bubbly, let it stand for 10 minutes and tap the bowl on the counter before pouring, or pass it through a fine sieve.

Gentle, humid heat

Bake at about 160°C (325°F) or lower. A water bath is the most reliable way to keep the edges from overcooking before the middle is done: wrap the springform in a double layer of heavy foil or set it inside a slightly larger cake pan, then place it in a roasting pan and pour in hot water to come halfway up the sides.

If you prefer not to use a water bath, set a pan of boiling water on the rack below the cheesecake and bake at a lower temperature for longer. The surface stays more supple, though the edge may color a little more.

Knowing when to stop

Gently nudge the pan. The outer 5 cm (2 in) or so should look set and matte, and the center should wobble as a unit, not ripple like liquid. If you use a thermometer, the center of a classic baked cheesecake is typically done at about 65 to 66°C (149 to 150°F). It will continue to set as it cools and firms completely in the fridge.

Waiting until the center looks firm is the most common route to a cracked, dry cake. The residual heat finishes the job.

Cooling without shock

As soon as the cake comes out, or after 10 minutes in the turned-off oven, run a thin knife around the inside edge of the pan so the cake can pull away freely as it contracts. Then turn the oven off, prop the door open a few centimeters with a wooden spoon, and leave the cheesecake inside for about an hour.

Move it to a rack until it reaches room temperature, then refrigerate it uncovered for an hour before covering. Chill it for at least 6 hours, ideally overnight, before slicing. Cheesecake is perishable; keep it refrigerated and do not leave it out for more than 2 hours.

Hiding a crack

A sour cream topping is the classic cover. Stir about 240 g (1 cup) sour cream with 2 tbsp sugar and a little vanilla, spread it over the warm cake and bake for 8 to 10 minutes more. You can also cover the top with fruit compote, a thin layer of ganache or whipped cream.

For a small crack, dip an offset spatula in hot water and gently smooth the surface while the cake is still warm. Keep in mind that a Basque-style cheesecake is meant to crack and char on top, so none of this applies there.

Common questions

Can I bake a cheesecake without a water bath?

Yes, if you bake at a lower temperature, put a pan of hot water on the rack below and watch the doneness carefully. The texture near the edge will be a little firmer, but cracks are still avoidable.

Why did my cheesecake crack in the fridge?

It was probably slightly overbaked or still stuck to the pan. As it chilled and contracted, the tension built up. Loosen the edge soon after baking and pull it out with more wobble next time.

Is a cracked cheesecake still good to eat?

Absolutely. The flavor is the same, though an overbaked cake can be slightly drier and more crumbly. Cover the top with fruit or a sour cream layer and serve it as planned.