-
1
To prepare cake:
-
2
Preheat oven to 350F.
-
3
Coat two 9-inch round cake pans with cooking spray with flour, alternatively, coat the pans with regular cooking spray, line them with parchment paper and spray the paper.
-
4
Whisk all-purpose flour, whole-wheat flour and salt in a medium bowl.
-
5
Beat 4 eggs and 23 cup sugar in a large bowl with an electric mixer on medium-high speed until pale yellow and doubled in volume, 6 to 9 minutes.
-
6
Add in vanilla and 1 teaspoon lime zest.
-
7
With a rubber spatula, gently fold almond (or canola) oil into the egg mixture, using long, even strokes, until just incorporated.
-
8
Add the flour mixture, gently stir until just incorporated.
-
9
Divide the batter between the pans, spread to the edges and gently rap the pans against the counter once or twice to settle the batter.
-
10
Bake, rotating the pans halfway through, until lightly browned and a toothpick inserted into the center comes out clean, 20 to 22 minutes.
-
11
Cool on a wire rack for 10 minutes, then invert the layers onto the rack, remove the pans and parchment paper, if using, and let cool completely, about 50 minutes.
-
12
To prepare lime filling:
-
13
Mix condensed milk, lime juice and 1 teaspoon lime zest in a medium bowl until combined.
-
14
Refrigerate until thickened, at least 30 minutes or overnight.
-
15
To prepare meringue:
-
16
Beat egg whites in a medium bowl with an electric mixer at high speed until soft peaks form.
-
17
Beat in 1/4 cup sugar in a slow, steady stream.
-
18
Continue beating until stiff peaks form.
-
19
Position oven rack about 6 inches from the heat source; preheat broiler.
-
20
Transfer one layer, bottom-side down, to a large baking sheet.
-
21
Spread the meringue on top of the cake, creating decorative peaks and valleys in the meringue with a rubber spatula.
-
22
Broil until lightly browned, watching carefully to prevent burning, 30 seconds to 1 minute.
-
23
To assemble cake:
-
24
Place the plain layer, top-side down, on a serving plate; spread the lime filling on top.
-
25
Cover with the meringue-topped layer.