This 4-Ingredient Slow Cooker Bananas Foster Cake is the kind of easy dessert that feels almost too simple for how impressive it tastes. Using vanilla cake mix, ripe bananas, brown sugar, and butter, it transforms in the slow cooker into a warm, soft cake with a rich caramel-banana flavor inspired by the classic New Orleans dessert. It is exactly the sort of recipe that works on a busy weekend when you want something cozy and bakery-worthy without pulling out a long list of ingredients.
Serve this cake warm with a scoop of vanilla ice cream or a generous spoonful of whipped cream so it melts into the caramel-like sauce. For a brunch-style treat, it also pairs nicely with hot coffee, cold brew, or even a little salted caramel latte, and if you want to lean into the bananas foster vibe, a sprinkle of chopped pecans on top adds a nice crunch.
4-Ingredient Slow Cooker Bananas Foster Cake using Vanilla Cake Mix
Servings: 8
Ingredients
1 box vanilla cake mix
3 ripe bananas, sliced
1 cup packed brown sugar
1/2 cup unsalted butter, melted
Directions
1. Lightly grease the inside of a 4- to 6-quart slow cooker with butter or nonstick spray to help prevent sticking.
2. Spread the sliced bananas evenly over the bottom of the slow cooker.
3. Sprinkle the dry vanilla cake mix evenly over the bananas, covering them in a thick layer.
4. Sprinkle the brown sugar over the cake mix, then drizzle the melted butter as evenly as possible over the top.
5. Cover and cook on low for 2 1/2 to 3 hours, until the cake is set and the bottom is bubbling into a caramel-like banana sauce.
6. Turn off the slow cooker and let the cake rest uncovered for 10 to 15 minutes before spooning into bowls or slicing into soft portions for serving.
Variations & Tips
Add nuts: Chopped pecans or walnuts sprinkled over the top before cooking give this dessert a little crunch and make it feel even more like a classic bananas foster-inspired treat.
Make it extra saucy: If you like a looser, spoonable dessert, add an extra 2 tablespoons of melted butter. It creates more of that rich caramel texture at the bottom, which is especially good with ice cream.
Use very ripe bananas: The darker and spottier the bananas are, the sweeter and more flavorful the finished cake will be. This is one of my favorite ways to use bananas that are a day or two past the point when everyone in the house suddenly stops eating them.
Don’t overcook: Slow cookers can run a little differently, so start checking around the 2 1/2-hour mark. You want the top set and the edges bubbling, but not dry.
For easier cleanup: A slow cooker liner can make this recipe especially convenient on a busy day, and it helps the soft caramelized banana layer lift out more neatly when serving.