Quick Recipe Version (TL;DR)
Quick Ingredients
- Unsalted butter, divided: 6 tbsp (85 g) for topping + 1/2 cup (113 g) for batter
- Light or dark brown sugar: 3/4 cup (150 g)
- Granulated sugar: 3/4 cup (150 g)
- Vanilla extract: 1 1/2 tsp (batter) + 1 tsp (topping)
- Fine salt: 1/2 tsp (batter) + 1/4 tsp (topping)
- Bananas: 3 large, ripe but firm
- Lemon juice: 1 tsp (to prevent browning, optional)
- All-purpose flour: 1 1/2 cups (195 g)
- Baking powder: 1 1/4 tsp
- Baking soda: 1/4 tsp
- Eggs: 2 large
- Sour cream: 1/2 cup (120 g)
- Whole milk: 1/4 cup (60 ml)
- Dark rum (optional): 1 tbsp for topping
Do This
- 1) Heat oven to 350°F (175°C). Butter a 9-inch round, 2-inch-deep cake pan; line bottom with parchment.
- 2) Simmer 6 tbsp butter, 3/4 cup brown sugar, 1 tsp vanilla, 1/4 tsp salt, and 1 tbsp water 2 minutes until glossy; pour into pan.
- 3) Halve bananas lengthwise; brush with 1 tsp lemon juice. Arrange cut side down over syrup in a fan pattern.
- 4) Cream 1/2 cup butter with 3/4 cup sugar 3 minutes. Beat in 2 eggs and 1 1/2 tsp vanilla.
- 5) Whisk flour, baking powder, baking soda, and 1/2 tsp salt. Mix sour cream and milk. Add dry and wet to batter alternately; mix just smooth.
- 6) Spread batter over bananas. Bake 40–45 minutes. Cool 10 minutes, loosen edges, invert onto plate. Serve warm.
Why You’ll Love This Recipe
- Deep caramelized banana flavor with a glossy, buttery brown sugar top.
- Soft, moist vanilla cake base thanks to sour cream for tenderness.
- No special equipment required: one pan, one bowl, one whisk and mixer.
- Showstopper presentation that’s surprisingly simple for home bakers.
Grocery List
- Produce: 3 large bananas (ripe but firm), 1 lemon (optional)
- Dairy: Unsalted butter, sour cream, whole milk, 2 large eggs
- Pantry: All-purpose flour, granulated sugar, light/dark brown sugar, baking powder, baking soda, vanilla extract, fine salt, dark rum (optional)
Full Ingredients
Banana Caramel Topping
- Unsalted butter: 6 tbsp (85 g)
- Light or dark brown sugar: 3/4 cup (150 g), packed
- Vanilla extract: 1 tsp
- Fine salt: 1/4 tsp
- Water: 1 tbsp (helps the sugar melt smoothly)
- Dark rum (optional): 1 tbsp, for a Bananas Foster vibe
- Bananas: 3 large, ripe but firm, peeled and halved lengthwise (or sliced into 1/2-inch rounds)
- Lemon juice: 1 tsp, to brush on cut bananas (optional)
Vanilla Cake Batter
- All-purpose flour: 1 1/2 cups (195 g)
- Baking powder: 1 1/4 tsp
- Baking soda: 1/4 tsp
- Fine salt: 1/2 tsp
- Unsalted butter: 1/2 cup (113 g), softened
- Granulated sugar: 3/4 cup (150 g)
- Large eggs: 2, at room temperature
- Vanilla extract: 1 1/2 tsp
- Sour cream: 1/2 cup (120 g), room temperature
- Whole milk: 1/4 cup (60 ml), room temperature
Optional Finishes
- Flaky sea salt, a pinch, for serving
- Lightly sweetened whipped cream or vanilla ice cream
- Toasted chopped pecans or walnuts, 1/3 cup
Step-by-Step Instructions
Step 1: Prep the pan and oven
Heat the oven to 350°F (175°C) with a rack in the center. Butter a 9-inch round cake pan that’s at least 2 inches deep (or use a 9-inch springform wrapped in foil to prevent leaks). Line the bottom with a parchment circle and butter the parchment. Set the pan on a rimmed baking sheet to catch any drips.
Step 2: Make the brown sugar syrup
In a small saucepan over medium heat, combine 6 tbsp butter, 3/4 cup brown sugar, 1 tbsp water, 1 tsp vanilla, 1/4 tsp salt, and the optional 1 tbsp rum. Cook, stirring, until the mixture melts and looks glossy and bubbling, about 2 minutes. Do not boil it to a dark caramel—just melt and combine. Immediately pour the syrup into the prepared pan and tilt to coat the bottom evenly.
Step 3: Arrange the bananas
Halve the bananas lengthwise (or slice into 1/2-inch rounds). If desired, brush cut sides with 1 tsp lemon juice to slow browning. Arrange bananas cut-side down over the syrup in a fan or pinwheel pattern, packing them snugly and filling gaps with smaller pieces. Set aside while you make the batter.
Step 4: Cream butter, sugar, and eggs
In a large bowl, beat 1/2 cup softened butter and 3/4 cup granulated sugar with a hand mixer (or stand mixer) on medium-high until pale and fluffy, about 3 minutes. Scrape the bowl. Beat in the eggs one at a time until smooth, then mix in 1 1/2 tsp vanilla.
Step 5: Finish the batter
In a separate bowl, whisk together the flour, baking powder, baking soda, and 1/2 tsp salt. In a small bowl, stir the sour cream and milk until smooth. Add the dry ingredients to the butter mixture in 2 additions, alternating with the sour cream mixture, beginning and ending with dry. Mix on low just until combined and no dry streaks remain. Do not overmix.
Step 6: Assemble and bake
Gently dollop the batter over the bananas and spread to the edges with an offset spatula; the batter will be thick. Tap the pan firmly on the counter 2–3 times to release air bubbles. Bake until the top is golden and a tester inserted in the center comes out clean or with a few moist crumbs, 40–45 minutes. If the top browns too quickly, tent loosely with foil for the last 10 minutes.
Step 7: Cool, invert, and serve
Cool the cake on a rack for 10 minutes. Run a thin knife around the edge to loosen. Place a serving plate over the pan and, using oven mitts, invert in one confident motion. Lift off the pan and peel away the parchment. Spoon any caramel left in the pan over the cake. Let stand 10 more minutes to set slightly. Sprinkle with a pinch of flaky sea salt, if using, and serve warm with whipped cream or ice cream.
Pro Tips
- Choose bananas that are yellow with small brown speckles—ripe for sweetness, but still firm enough to hold shape.
- Parchment on the bottom of the pan ensures a clean release and protects the banana layer.
- Weigh flour if possible (195 g) to avoid a dense cake. If using cups, fluff, spoon, and level.
- Tapping the pan before baking helps the batter settle around the bananas for a seamless top.
- For deeper caramel notes, add the optional rum or cook the syrup 30 seconds longer—just do not let it darken too much.
Variations
- Bananas Foster Style: Add 1–2 tbsp dark rum to the syrup and a pinch of cinnamon.
- Nutty Crunch: Scatter 1/3 cup toasted chopped pecans or walnuts over the syrup before adding bananas.
- Spiced Vanilla Cake: Add 1 tsp ground cinnamon and a pinch of nutmeg to the dry ingredients.
Storage & Make-Ahead
Store leftovers, covered, at room temperature up to 2 days or refrigerated up to 4 days. Rewarm slices in a 300°F (150°C) oven for 8–10 minutes or in the microwave in short bursts to loosen the caramel. To freeze, wrap individual slices snugly and freeze up to 2 months; thaw overnight in the refrigerator, then warm before serving. You can make the brown sugar syrup up to 2 days ahead and refrigerate; rewarm gently before pouring into the pan. Mix the dry ingredients in advance and keep sealed; prepare the batter just before baking.
Nutrition (per serving)
Approximate values: 406 calories; 19 g fat; 57 g carbohydrates; 5 g protein; 1.4 g fiber; 290 mg sodium. Calculated for 10 servings and will vary with optional toppings.
