I made this Martha Stewart recipe for one of our two Mother’s Day celebrations earlier this month, and it was easy to prepare all the pieces the day before and then assemble it with a flourish on the day of. The original recipe is not gluten-free but we had Fussellette staying with us and made one simple adjustment to make it that way – you can do it whichever way you would like.
Start with the meringue: preheat your oven to 275°F and grab three 8″ round cake pans. I happened to have 2 8″ round cake pans and one 9″, so that’s what I used.
Butter the pans and then line the bottom and sides with parchment. This is easier said than done as the pans are round and parchment is straight. Get creative with the folding. It’ll just add to the allure of the finished product, I promise. Now butter the parchment as well to make sure it sticks.
Crack open 6 large eggs and separate the whites from the yolks. Put the yolks in the fridge for now and leave the whites to come to room temperature.
In the bowl of a food processor, pulse together 1 1/2 cups sugar, 3 tablespoons cornstarch, and 1/4 teaspoon coarse salt until smooth and powdery and when you open the lid it kind of wafts out like smoke. Don’t inhale that. You will cough.
Now grab your 6 egg whites and beat them with a pinch of cream of tartar until soft peaks form.
Slowly, a little bit at a time, tip in the sugar mixture and keep beating until you get lovely stiff peaks.
Smooth the meringue amid your three pans and bake for 1 hour.
Then turn off the oven and wedge the oven door open with a wooden spoon for another hour. Then move the pans to a wire rack to cool completely. If you’re going to assemble the cake the next day, slip each layer of cooled meringue into a separate sealed bag and suck the air out of it.
Next, let’s work on the custard cream. In a bowl, whisk together 1/3 cup sugar, 1/4 cup flour, and a pinch of coarse salt. We made a gluten-free version of the flour by combining coconut flour, xanthan gum, and corn starch.
In a small saucepan, combine your leftover 6 egg yolks (original recipe calls for 3 but why waste them?) with 1 1/2 cups buttermilk and a split vanilla bean pod with the seeds scraped out. Stir that over medium heat and slowly add in the flour mixture.
With ours, because of the nontraditional ingredients, I found the buttermilk reacted with either the cornstarch or the xanthan gum and I pretty much had instant custard. So I stirred it until I was sure the yolks had a chance to cook and then took it off the heat. If you’re using regular flour you may have to work harder at it, so stir until it just comes to a boil and then strain through a fine meshed sieve.
Pour the custard cream into a bowl, lay a piece of plastic wrap over the surface so it’s completely sealed, and chuck it in the fridge for at least an hour or overnight.
Now there’s caramel to make too. In the original, Martha used the microwave but we moved ours into the basement and that was too far away. I did this in a small saucepan on the stove. First, spray a baking sheet with cooking spray or line it with parchment.
Then over medium heat, stir together 1/3 cup sugar and 2 tablespoons corn syrup.
Cook, stirring often, until the mixture is bubbling and turns a light brown.
Remove that from the heat and drizzle it over the baking sheet.
Leave that to cool then chop it up with a knife into little tiny jagged pieces. If you’re assembling the next day, shove the pieces into a resealable bag and squeeze the air out.
To assemble, start by whipping up some heavy cream to your taste and amount (this is going on the top as garnish so use as much as you like – I think we whipped up about a cup of it). Cream whips better if your bowl and mixers are cold, so chuck them in the freezer for a while if you can.
Plop one of the meringues on a nice plate and smother it with about half the custard cream.
Sprinkle that with about 1/3 of your caramel pieces.
Let some fall off artistically to the side. It’s decorative.
Plop another meringue on and smear with the rest of the custard cream and another 1/3 of the caramel bits. Add the final layer and top that with your whipped cream and the last of the caramel. Serve immediately!