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I’m not a passionate cake baker. I mean, I’ll bake a cake, sure. And I bake a lot of birthday cakes here at King Arthur Flour, because how can you possibly work at a baking company and NOT have a candle-lit cake delivered to you, at your desk, on your birthday?

But cake doesn’t speak to me like bread. It doesn’t whisper in my ear, late at night, “What if you shaped those rolls around a chunk of cheddar?” I don’t suddenly drop everything I’m doing and decide to make chiffon cake, the way I sometimes do with pizza. A beautifully decorated cake—truly, a work of art, over which some soul has slaved for hours—doesn’t look half as good to me as a shapely baguette, or a golden loaf of sandwich bread.

But back to those King Arthur birthdays. I know most of my fellow workers pretty well. My e-o’s (short for employee-owners; King Arthur Flour is owned by us, the employees) are pretty reliably chocolate lovers, with the occasional fruit fanatic thrown in.

But every now and then, I’m not so sure… I know Janet likes peaches and Halley digs chocolate and Kelly is a lemon lover, but what does Jim like? He seems pretty omnivorous, happily sampling anything that comes his way. But if forced to choose the dessert for his final meal, would it be vanilla… or chocolate… or something I’d never consider?

Rather than ask and spoil the surprise, I’ve hit upon a compromise cake flavor: Choco-nilla. That would be chocolate and vanilla, of course. Two chocolate layers, two vanilla, sandwiched together with a darker-than-dark chocolate ganache.

This cake tastes great, the assertive chocolate playing off nicely against milder vanilla. It looks impressive. It’s surprisingly easy to make: both the chocolate and vanilla cakes are of the stir-together variety, no fussy creaming or whipping necessary. And the icing is simplicity itself, chocolate and cream melted together in the microwave.

So join me here in the King Arthur test kitchen as I make Choco-nilla Cake. And oh, by the way, my favorite birthday cake, the one my fellow e-o’s bring me every year? Pepperidge Farm Coconut Cake, right out of the supermarket freezer case. Call it my hidden vice.

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Let’s make the vanilla cake first. This is an easy, stir-together cake. First combine the yogurt, eggs, sugar, salt, vegetable oil, and vanilla.

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It’ll be a thin batter.

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Next, stir in the baking powder and flour to make a thick batter.

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Grease a 9” pan, line it with parchment (if you worry about getting the cake out in one piece), and grease the parchment.

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Pour the batter into the pan.

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Bake the cake till it’s starting to brown. The top may crack a bit; that’s fine. Once it’s iced, no one will see the cracks. After about 5 minutes, turn the cake out of the pan onto a rack to cool.

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Next, the chocolate layer. Combine all of the ingredients.

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Mix till everything is thoroughly combined. How easy is that?

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Pour the batter into a 9” round cake pan, which again, you’ve prepared with greased parchment if you’re worried about getting the cake out intact.

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Bake the cake for about 35 minutes, till a cake tester inserted into the center comes out clean. After about 5 minutes, turn the cake out of the pan onto a rack to cool.

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Once the cakes are cool, split each one in half by cutting around the circumference. A long serrated knife works very well here.

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You’ll have four layers that look like this: two chocolate, two vanilla.

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Now we’re going to make the ganache icing. For those of you who’ve seen me demonstrate ganache in this blog multiple times, you can skip down a few pictures. For those who’ve never seen this—you’re going to learn how to make the best, easiest, most chocolate-y icing ever. First, combine heavy cream and chocolate chips in a microwave-safe bowl, and microwave till the cream is very hot and beginning to foam just a bit.

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Remove from the microwave, and stir. It’ll look VERY unpromising at first. Keep stirring.

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After a bit, the chocolate will begin to come together, and follow the spoon or spatula around the bowl as you stir. Keep stirring; you want to incorporate all of the liquid.

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Ah, lovely! That’s chocolate ganache. At this point you can flavor it with liqueur or an extract, if you like. I stirred in some Kahlua.

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Place a vanilla or chocolate layer on a serving plate. If you’re worried about messy drips, tear some strips of parchment, and slide them under the edges of the cake. They’ll catch any extra icing, and you can easily remove the parchment when you’re done.

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Spread the icing with a spatula nearly (but not quite) to the edge of the cake.

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Leave a little bit of bare cake showing. That way, when you add the other layers, the icing will be squished to the edge, but not over.

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Continue with the other three layers, alternating vanilla and chocolate layers. When you’re done, anchor the layers together with cake testers, broom straws, bamboo skewers, or something else long and skinny. This will keep them centered atop one another till the ganache hardens.

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See how the weight of the layers has pushed the icing right to the edge? Let the cake sit (with a cake cover on top, if you have one) for a couple of hours, till it’s pretty secure.

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To ice the cake, you’re going to make another batch of ganache. Spread it on top of the cake, letting it run down the sides.

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Use a spatula to smooth it all around the sides. Add decorations while the ganache is still warm; otherwise, they won’t stick.

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Light the candles! Sing Happy Birthday!

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Have the birthday girl or boy blow out the candles…

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…and serve, to great huzzahs all around.

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Another view. I tell you, I’m not a great cake baker, but I’m pretty darned proud of this one. That’s why I couldn’t resist sharing another picture.

And, by the way: Jim said it was the best cake he’s ever eaten.

Read, review, and rate (please!) our recipe for Choco-nilla Cake.

Buy vs. Bake

Buy: Supermarket bakeshop iced single-layer chocolate cake, 44¢/ounce

Bake at home: Four-layer Choco-nilla Cake, 20¢/ounce