Caramel Banana Eclair Cake

Caramel Banana Eclair Cake is a no-churn dessert that layers choux pastry, pastry cream, fresh banana, and caramel sauce without any fussy assembly. The pastry bakes into a crisp base, the cream sets up soft and silky, and the whole thing comes together in an afternoon.

Ingredients for Caramel Banana Eclair Cake

Water and butter form the base for the choux pastry, which bakes into a thin, crispy layer. All-purpose flour gives the pastry structure without making it tough. Eggs add lift and bind everything together. For the pastry cream, whole milk carries the flavor while egg yolks and cornstarch thicken it into a silky filling. Granulated sugar sweetens both the cream and the caramel. Vanilla extract perfumes the cream with warmth. Bananas add natural sweetness and texture between the layers. Heavy cream whips into a light topping. Salted butter and brown sugar build the caramel sauce, which gets its deep flavor from the sugar’s molasses content.

Why This Caramel Banana Eclair Cake Works

The choux pastry base bakes until crisp and hollow, creating a sturdy foundation that won’t get soggy under the cream. Unlike a traditional cake that absorbs moisture, this pastry stays crunchy underneath because the cream sits on top of it, not soaked into it.

The pastry cream thickens as it cooks because the egg yolks and cornstarch set when heat activates them. It stays smooth because you whisk constantly, preventing lumps from forming. Once chilled, it becomes thick enough to hold its shape but soft enough to eat with a spoon.

Fresh banana slices add moisture and sweetness without needing another baked layer. The caramel sauce brings richness and a slight saltiness that balances the sweet cream and fruit. Because everything is assembled cold, the flavors stay distinct and the textures don’t blur together.

Mistakes To Avoid

Underbaking the choux pastry leaves it pale, soft, and prone to collapse under the weight of the cream. The pastry needs to be a light golden brown and sound hollow when you tap it. If it looks done but feels soft, bake it another 3 to 5 minutes.

Cooking the pastry cream at too high a heat causes the eggs to scramble into grainy curds instead of thickening smoothly. Keep the heat at medium, stir constantly, and the cream will thicken in about 8 to 10 minutes without breaking.

Assembling the cake with warm pastry cream softens the choux base and makes everything slide around. The cream must be completely cold before you layer it, and the assembled cake should chill for at least 1 hour so the layers set and hold their shape.

Slicing with a serrated knife that saws back and forth crushes the pastry and smears the filling. Use a long, sharp serrated knife and cut with one smooth downward motion, wiping the blade clean between cuts.

As an Amazon Associate, we earn from qualifying purchases.

Ingredients

• 1/2 cup water
• 1/2 cup unsalted butter
• 1 cup all-purpose flour (120 grams)
• 4 large eggs, room temperature
• 2 cups whole milk
• 5 large egg yolks, room temperature
• 1/4 cup cornstarch
• 3/4 cup granulated sugar, divided
• 2 teaspoons vanilla extract
• 3 ripe but firm bananas
• 1 cup heavy cream, cold
• 1/4 cup salted butter
• 1/2 cup packed brown sugar
• 1/4 teaspoon salt

Step-by-step Instructions

1. Heat oven to 400°F (200°C). Line a 9×13 inch baking pan with parchment paper.
2. In a medium saucepan, combine 1/2 cup water and 1/2 cup unsalted butter over medium heat. Stir until the butter melts and the mixture comes to a gentle boil.
3. Remove from heat and stir in 1 cup flour until a shaggy dough forms. Let cool for 2 minutes.
4. Add 4 eggs one at a time, stirring vigorously after each addition until the mixture is smooth and glossy. The dough should look like thick cake batter.
5. Spread the choux dough evenly into the prepared pan. Bake at 400°F (200°C) for 30 to 35 minutes until the pastry is light golden brown and sounds hollow when tapped. Cool completely in the pan, about 20 minutes.
6. While the pastry cools, heat 2 cups whole milk in a saucepan over medium heat until small bubbles form around the edge, about 5 minutes. Do not boil.
7. In a bowl, whisk 5 egg yolks with 1/2 cup granulated sugar and 1/4 cup cornstarch until pale and thick, about 2 minutes.
8. Slowly pour the hot milk into the egg mixture while whisking constantly to prevent scrambling. Return everything to the saucepan and whisk over medium heat for 8 to 10 minutes until the mixture thickens and coats the back of a spoon. Stir in 2 teaspoons vanilla extract. Let cool to room temperature, about 15 minutes, then refrigerate for at least 30 minutes until completely cold.
9. Slice 3 bananas into 1/4 inch thick rounds. In a clean bowl, whip 1 cup cold heavy cream with 1/4 cup granulated sugar until soft peaks form.
10. Spread the cold pastry cream evenly over the cooled choux base. Arrange the banana slices in a single layer over the cream. Top with the whipped cream and spread it smooth.
11. In a saucepan, combine 1/4 cup salted butter and 1/2 cup brown sugar over medium heat. Stir until the butter melts and the sugar dissolves, about 3 minutes. Let cool for 5 minutes, then drizzle the caramel sauce over the whipped cream.
12. Refrigerate the assembled cake for at least 1 hour before serving. Cut with a long serrated knife, wiping the blade clean between cuts.