This is what I consider a perfect spring time treat. The combination of the tart rhubarb, hint of rose, and lightly sweetened almond cake got me hooked the first time making this wonderful financier cake last spring. So when I first spotted rhubarb at the farmer’s market a few weeks ago, I immediately bought a pound to bake this again since I never got around posting the recipe last year.
I absolutely love the bright colors of the rhubarb stalks that add a wonderful gradient of colors on the cake ranging from crimson red, pink, to light green. Serve the tart any time of the day, as a breakfast treat, afternoon snack, or a light dessert with vanilla whipped cream.
Recipe adapted from Hint of Vanilla
450g rhubarb split lengthwise
20g granulated sugar
250g unsalted butter
120g almond flour
120g all-purpose flour
280g icing sugar
288g egg whites
2 tsp rose water
Extra sugar for sprinkling before baking
Icing sugar for finishing
Preheat the oven to 350°F (180°C). Line two baking sheets with parchment paper (one for roasting the rhubarb and another for the cake). Spray a 9-inch tart ring with non-stick spray.
Trim the rhubarb ends and cut into strips. Place on one of the baking sheets and sprinkle the granulated sugar over. Roast the rhubarb until it is tender, but still has a bite and some structure to it – about 15 minutes. Remove from the oven and let cool completely.
For the financier, lower the oven temperature to 325°F (165°C).
To start, place the butter in a heavy-bottomed saucepan over medium heat. Let the butter cook until the liquid becomes a light brown color and the milk solids on the bottom of the pan are a dark brown. Remove from the heat and pour the brown butter in a clean bowl to cool slightly. This should yield about 206 g of brown butter. If you have more than that, reserve the excess for other uses.
Meanwhile, sift the almond flour, all-purpose flour, and icing sugar into the bowl of a stand mixer. Add the egg whites and rose water, then beat with the paddle attachment just until everything is incorporated. Scrape the bottom and sides of the bowl to make sure there are no pockets of dry ingredients. Once the brown butter is no longer hot (warm is okay), slowly pour it into the almond and egg white mixture with the mixer on low speed.
Pour the financier batter into the tart ring. Arrange the rhubarb on the financier trimming the ends to fit the tart ring. Sprinkle the vanilla sugar over top the rhubarb. Bake until the batter is golden brown underneath the rhubarb and a toothpick inserted into the middle comes out with a few crumbs sticking to it – about 1 hour and 10 minutes. Remove from the oven and let cool completely.
To finish, dust the tart with sifted icing sugar and serve.