BANANA CREAM CAKE

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 BANANA CREAM CAKE

Ingredients:


Banana Cake:
  • 200 gram all-purpose flour (1 1/2 cup)
  • 1 teaspoon baking powder
  • 1/2 teaspoon baking soda
  • 1/4 teaspoon kosher salt
  • 113 grams unsalted butter, softened (1/2 cup)
  • 150 grams grunalated sugar (3/4 cup)
  • 2 large eggs, room temp
  • 1 1/2 teaspoon pure vanilla extract
  • 175 grams mashed ripe bananas (2 medium bananas or about 3/4 cup)
  • 90 grams sour cream (6 tablespoon)

Pastry Cream Filling:
  • 454 grams whole milk (2 cup)
  • 150 grams granulated sugar (3/4 cup)
  • 32 grams cornstarch (1/4 cup)
  • 4 large egg yolks
  • 1/4 teaspoon kosher salt
  • 28 grams unsalted butter (2 tablespoon)
  • 2 teaspoon pure vanilla extract
  • 2 medium bananas, thinly sliced

Swiss Meringue Buttercream:
  • 190 grams egg whites (3/4 cup) abaout 6 large eggs
  • 300 grams granulated sugar (1 1/2 cup)
  • 452 grams unsalted butter (2 cup), sliced into tablespoons, room temp
  • 1/4 teaspoon kosher salt
  • 1 1/2 teaspoon pure vanilla extract

Instructions:

Banana Cake:
  • Preheat oven to 350°f. Line two 6-inch round cake pans with parchment paper. Grease well. Set aside.
  • In a medium bowl, whisk together flour, baking powder, baking soda, and salt. Set aside.
  • In the bowl of a stand mixer fitted with paddle attachment,, cream butter, sugar, and vanilla until smooth. Scrape down sides of bowl as needed.
  • Mixing on low speed, add eggs one time. Add in mashed bananas. Mix on medium speed until well combined. *The batter may look curdled.
  • Add half of dry flour mixture. Mix on low speed until almost icroporated. Follow with sour cream. Mix. Then, add remaining half of dry flour. Mix on low speed until just combined. Finish mixing by hand to ensure there are no longer any dry streaks of flour.
  • Divide batter between the two prepared cake pans (about 390 grams each). Bake in the center rack of oven for 30 minutes, rotating pans midway through baking.
  • Cool cake in pans for 10 minutes. Run mini offset spatula along the perimeter of cake pans to loosen cake. unmold cake. Cool cakes to room temperature on wire rack.

Pastry Cream Filling:
  • Line a half-sheet baking pan with plastic wrap, making sure the sides of the tray are also covered. Set aside.
  • Pour 1 1/2 cup of milk into a large heavy bottomed saucepot. Add 2 tablespoon (25 grams) of sugar. Stir together. Place over medium-high heat and bring to a boil. Stir occasionally to ensure milk does not burn along the sides or buttom of pan.
  • Meanwhile, in a large bowl, whisk together cornstarch and remaining 1/2 cup + 2 tablespoon (125 grams) sugar. Add egg yolks and remaining 1/2 cup milk. whisk until smooth.
  • Once milk has a come to boil, reduce heat. Slowly add a llittle bit of the hot milk (about 1/3 cup at a time) into the egg mixture. whisk constantly to distribute to heat. Continue until only a couple tablespoons of milk are left in the saucepot. Then, pour all the egg-milk mixture back into the saucepot.
  • Whisk constantly over medium heat until the custard has thickened. (Use a whisk or a spatula) Keep stirring, ensuring to scarpe the buttom and sides of the pot. Let custard come to boil to cook out the cornstarch flavor. Remove from heat.
  • Whisk in butter until melted and distributed. Add vanilla and whisk until combined.
  • Pour the hot pastry cream into the prepared plastic wrapped sheet pan. Spread into an even layer. Cover the cream directly with plastic wrap. Freeze for 10-15 minutes until the pastry cream has cooled to room temperature.
  • Removed from the freezer. Continue to cool in refrigerator until ready to use. 

Swiss Meringue Buttercream:
  • In the bowl of a stand mixer, whisk together egg whites and sugar. place over a pot of simmering water to create a bain-marie or double boiler. Make sure the simmering water does not touch the buttom of the bowl. Whisk mixture until it reaches a temperature of 160°f.
          *Alternatively, if you don't have a thermometer, heat the mixture until all the sugar has                         melted. Test this by dipping your pointer finger into the mixture and rubbing it againts your                  thumb. The mixture should feel smooth. You should not be able to feel the granules of sugar.
  • Return bowl to stand mixer. Using the whisk attachemt, beat mixture at medium speed until it has cooled to room temperature (about 75-80°f) and meringue has started to form.
  • Reduce to low speed. Add butter one tablespoon at a time. Add salt and vanilla. Increase speed to medium-high and continue to beat until buttercream is light and fluffy. 

Assembly:
  • Thinly slice bananas for filling. Cover and set aside Remove pastry cream from fridge. Transfer to a bowl. Use a whisk or sturdy spatula to refresh and smooth pastry cream. Set aside.
  • Fit a piping bag (also called pastry bag or decorating bag) with a small round tip. Fill bag with about 1/2 cup of buttercream. Set aside.
  • Level cake layers as necessary. Split each cake round in half lengthwise to create a total of 4 cake layers.
  • Place one cake layer on serving platter or cake turntable. Use a mini offset spatula to spread a thin layer of buttercream (about 2 Tbsp) over cake layer.
  • Use the filled piping bag to pipe a border of buttercream along the perimeter of cake round. This will serve as a barrier.
  • Arrange a layer of slliced bananas within the buttercream border. Top banans with pastry cream. Use  a mini  offset spatula to spread pastry cream in an even layer within the buttercream border.
          *Amount of pastry cream used is depending on the thickness of the banana slices.
  • Place second cake layer on top. Repeat spreading buttercream, piping border, adding banana, and pastry cream until the final fourth cake layer is added on top.
  • Spread buttercream all over the cake to create a "crumb coat" layer to seal in any crumbs. Chill cake in the fridge for about 20 minutes to set frosting.
  • If desired, coat chilled cake with additional buttercream. Decorate cake as desired.
  • Keep cake chilled until to serve. Rest cake at room temperature for about 30 minutes to soften buttercream frosting before serving.




https://www.thelittleepicurean.com/banana-cream-cake/#wprm-recipe-container-30094

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