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Banana Lemon Cream Cake with Caramel Sauce, Toasted Coconut and Pecan Buttercream
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5 from 3 votes

Banana Lemon Cream Cake with Caramel Sauce, Toasted Coconut and Pecan Buttercream

Tender and pillowy banana cake layers, soaked with caramel sauce, and topped with banana lemon whipped cream filling, toasted coconut and pecan buttercream
Course: Dessert
Cuisine: Cake
Keyword: Banana, Banana Cake, Banana Cream Filling, Banana Lemon Cream Filling, caramel, Caramel sauce, Lemon, pecan, pecan buttercream

Ingredients

For the Cake

  • 3 cups (360 g) all-purpose flour
  • 3/4 teaspoon (3 g) baking powder
  • 3/4 teaspoon (3 g) baking soda
  • 3/4 teaspoon (4.2) g salt
  • 3/4 cup (169.5 g) unsalted butter, room temperature
  • 1 1/2 tablespoons (20 g) vegetable oil
  • 1 1/2 cups (300 g) granulated sugar
  • 1/3 cup (73.3 g) light brown sugar
  • 3 eggs, room temperature
  • 1 1/2 cup (360 g) buttermilk, room temperature
  • 1 1/2 teaspoons (6.3 g) pure vanilla extract
  • 3 medium-sized over-ripe bananas mashed

For the Whipped Filling

  • 1 1/2 cup (360 g) heavy whipping cream
  • 3 tbsp banana flavored INSTANT pudding mix
  • 1/3 cup (41.6 g) powdered sugar
  • 1 tbsp fresh lemon juice about the juice of half a large lemon

For the Salted Salted Caramel

  • 1 cup (200 g) granulated sugar
  • 8 tablespoons (120 g) water
  • 2 teaspoons (14 g) light corn syrup or honey
  • 1 cup (240 g) heavy whipping cream
  • 1 teaspoon (4.2 g) vanilla extract
  • 1 teaspoon (6 g) salt

FOR THE PECAN BUTTER

  • 3 cups (300 g) chopped pecans
  • 1 tablespoon (13.6 g) olive oil
  • *Makes about 1 1/2 cups butter

FOR THE BUTTERCREAM

  • 2 cups (452 g) unsalted butter slightly cold
  • 6 cups (750 g) powdered sugar measured and then sifted
  • Pecan butter, recipe above
  • 3 tablespoon (43.3 g) heavy whipping cream
  • Pinch of salt
  • *This buttercream recipe makes enough to fill and cover your cake. If you want to add additional piping you’ll want to make an extra 1/2 batch.

Garnish and Filling

  • About 1 cup toasted coconut, I buy mine pretoasted from Orson Gygi

Instructions

For the Cake

  • Preheat your oven to 325 degrees F. Spray three 8-inch pans with nonstick cooking spray, line the bottoms with parchment paper, and spray again. Set aside.
  • In a medium bowl, whisk together the flour, baking powder, baking soda and salt. Set aside.
  • In a stand mixer fitted with the paddle attachment, beat the butter, oil, and sugars on medium-high speed until pale and fluffy, about 5 minutes. Lower the speed to medium and add the eggs, one at a time, mixing until each is fully incorporated before adding the next (about 30 seconds). Add the vanilla.
  • With the mixer on low, add the dry ingredients alternating with the buttermilk mixture into the creamed mixture, starting and ending with the dry ingredients. Mix until just incorporated and remove bowl from stand mixer. Using a large stainless steel whisk, stir/whisk the mashed banana into the mixture--you can use use some strength and blend well, ensuring all of the ingredients are well mixed. (If you don't have a large stainless whisk, you can fold the banana mixture in using a rubber spatula until incorporated.)
  • Divide the batter evenly between the pans, using a kitchen scale for the best accuracy. (For this recipe, you'll have about 20 ounces of batter in each of the three 8-inch pans).
  • Carefully smooth the batter with small offset palette knife, and bake until a toothpick or skewer comes out clean, about 30 to 35 minutes.
  • Let pans cool on wire rack for 10 minutes, then invert cakes onto racks, gently, peeling away parchment rounds. Let cool completely.
  • When the cakes are completely cooled, level the cake layers if necessary. Using a fork, poke holes all over the cake layers. Drizzle about 1/4 to 1/3 cup of caramel over all three cake layers and allow the caramel to soak in.

FOR THE FILLING

  • In a medium bowl, combine the heavy whipping cream, pudding, powdered sugar and lemon juice. Using whisk attachment, beat until soft to medium stiff peaks form. Cover and refrigerate until read to use.
  • Best made a day or more before using.

For the Salted Caramel

  • Heat the cream in the microwave for about a minute. Set aside.
  • Combine the sugar, water, and corn syrup in a saucepan over medium heat. Stir until sugar is dissolved and then stop stirring.
  • You want the mixture to cook on its own. Stirring creates crystallization. If you notice sugar crystallizing on the sides of the pan, soak a pastry brush in warm water and run the brush along the sides of the pan where the sugar is building up.
  • Once the mixture turns amber in color, remove the pan from the heat and slowly add the cream, while stirring the caramel.
  • Add the vanilla and salt, and stir to combine.
  • Cool to room temperature before using. The caramel shouldn't be too thick. We want this on the slightly runny side.
  • Caramel can be refrigerated for up to two weeks in an airtight container.

FOR THE PECAN BUTTER

  • Combine the pecans and oil in a food processor and blend until you've created a nut butter.

FOR THE BUTTERCREAM

  • In an electric mixer fitted with the paddle attachment, beat the butter on medium-high speed for about 2 minutes.
  • With the mixer on low speed, gradually add the powdered sugar, followed by the pecan butter and cream.
  • Turn the mixer to medium-high speed and beat the buttercream for about 3 to 5 minutes.
  • Before spreading on your cake, spend a couple minutes mixing the buttercream by hand with a wooden spoon to push out the air pockets.

Assembly

  • Spread a small dollop of buttercream on a cake board or cake plate. Place the first cake layer, top side up.
  • Pipe a rim of buttercream around the edge of the cake. Fill the center with half of the banana lemon cream filling. Sprinkle a handful of toasted coconut over the cream filling.
  • Repeat these steps with the second layer.
  • Place the final cake layer, top side down, on the second layer of filling.
  • Cover the cake with a thin layer of buttercream. Freeze the cake for 15 minutes to set the crumb coat.
  • Once the crumb coat is set, continue to frost the cake with the remaining buttercream.