Gâteau invisible doesn’t share the storied provenance of legendary French apple desserts such as tarte Tatin or tarte Normande.
In fact, the chic cake may well be an arriviste—an upstart among more classic examples of patisserie. But trust me, you’ll forgive the cake its ambiguous origins as soon as you see it sliced: The mesmerizing cross-section showcases paper-thin slices of apple so snugly stacked on top of each other that the batter surrounding them seems to disappear (hence the name).
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It’s also one of those desserts that looks rich but tastes exquisitely light—all bright and tender fruit, with a touch of custardy creaminess from the batter that subtly girds it. If there’s a caramel sauce or sweetened whipped cream served alongside, the gâteau will offset it with plenty of vibrancy.
And yet, for all the dessert’s apparent refinement and elegance, making one is well within a novice baker’s wheelhouse.
You simply whisk together a crepe-like batter of eggs, milk, sugar, flour, salt, baking powder, and perhaps some butter, spice, or vanilla; stir in a lavish amount of sliced apples; transfer the batter to a greased pan and arrange the slices so they’re flat (which turns out to be remarkably easy); and bake. All you need is a good formula.
Don Your Mandoline Armor
The key to using a mandoline effectively is to push the food along the blade with conviction, and that’s much easier to do when you’re wearing a cut-resistant glove. Made from high-tech engineered fabrics that are stronger than an equal weight of stainless steel, it provides great protection from slicing blades and can also save your knuckles when using a box grater. We recommend the Mercer Culinary MercerGuard Cut Glove.
Slice Thickness Check
To double-check your mandoline’s thickness settings, place a stack of 5 apple slices against a ruler. They should measure ½ inch.
Batter Up
High-acid Granny Smith apples are ideal in this cake.
Not only does their malic tang make them taste especially bright, but Granny Smiths’ abundant acid content, which is about twice that of other common varieties such as Golden Delicious, strengthens the fruit’s pectin and helps the wafer-thin slices hold their shape as they cook.
Speaking of their thinness: I used a mandoline to shave 2½ pounds of apples into 1⁄10-inch slices.
Next, I mixed together a vanilla bean–scented batter and stirred it into the apples; it had just enough body to cling to the slices. Then, I carefully arranged them in a loaf pan, which many bakers choose because its high sides make for an impressively layered gâteau.
From Thick to Thin
As the batter rests while you prepare the loaf pan, its consistency will loosen considerably, thanks to sugar in the mix drawing moisture out of the apples—basic osmosis. By the time you’re ready to bake, it will be pourable but perfectly clingy.
But by the time I finished layering the coated slices in the pan, the batter had thinned to the consistency of milk.
The contents of the pan sloshed as I brought it to the oven, and even after baking for 90 minutes and fully cooling, the gâteau was more pudding than cake.
The reason, I realized, was osmosis: The sugar had drawn moisture out of the apples and into the batter. As the cake baked, the fruit released even more moisture, throwing off the ratio of liquid to dry ingredients, so the cake couldn’t set properly.
Going forward, I made an intentionally thick batter by omitting the milk; I then mixed it with the apple slices and set the mixture aside while I prepared the pan and preheated the oven.
By the time I was ready to bake, the batter had loosened up to a perfect slice-coating cling.
Over the Top
Looking at the bowl, I noticed the perk that makes this recipe so much easier than it looks: Most of the slices self-leveled in the batter and didn’t need precise arrangement. I simply scooped the mixture into the pan and patted it to smooth the surface.
Those Stunning Layers? They Form Naturally
The tightly layered stack of apple slices that makes gâteau invisible so visually impressive looks labor-intensive to pull off, but the fruit, the batter, and some simple physics do most of the work. As the slices sit in the relatively thin batter, they naturally flatten out under their own weight and align themselves against one another. All you have to do is scoop them into the loaf pan with a spoon and then shingle the reserved slices for the top layer by hand.
The only slices that I did want to arrange by hand were the ones on the top layer, which looked especially nice when placed with some French patisserie precision.
I reserved a small portion of well-shaped slices for the top; once the rest of the apples and most of the batter were in the pan, I dipped the reserved slices in a bit of excess batter and shingled them over the surface before sliding the pan into the oven.
The baked gâteau emerged stunning and sturdy enough to slice cleanly, revealing neat layers of fruit. A quick brush of melted apple jelly over the top gave it a subtle sheen, and a dollop of whipped cream tinged with brown sugar and cinnamon anchored the dessert’s fruity punch with a touch of richness.
Cut Wedges from a Rectangle
You can smarten up the appearance of a loaf-shaped cake by making diagonal cuts that create wedges instead of slicing straight across and producing slabs.
Gâteau Invisible with Brown Sugar–Cinnamon Whipped Cream
In gâteau invisible, the batter that lightly binds slim apple slices all but disappears during baking, leaving the focus on tender, concentrated fruit.
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